Top 10 Strongest Pokemon

Pokemon has been a part of our lives since 1996, when the first games came out and introduced us to the wonderful world of catching and battling monsters. Over the years, the Pokemon universe has grown bigger and better, with new generations of Pokemon that have their own special traits and powers. Some Pokemon have stood out from the rest, becoming legends in their own right and earning the admiration of fans everywhere.

You probably have a favorite Pokemon that you think is the strongest of them all. Maybe it's a legendary like Mewtwo, who has incredible stats and Psychic powers. Or maybe you love a beast like Dragonite, who can learn many different moves and hit hard with its physical attacks.

But what about the hidden gems? Are there any Pokemon that are underrated but have amazing potential and strength? With so many Pokemon to choose from, it's hard to say which ones are truly the best of the best.

So, no matter if you're an old-school fan of the first 151 or you've caught up with the latest generation, there's something for everyone on this list. From electric mice to legendary birds, these Pokemon have shown that they are some of the most awesome creatures in the Pokemon world.

The Top Ten

Arceus

Arceus is a Legendary Pokémon that first appeared in the 18th Pokémon movie, "Pokémon: Arceus and the Jewel of Life," where it was featured alongside other Legendary Pokémon. In the Pokémon universe, Arceus is referred to as "The Original One" and is believed to have created the entire Pokémon world... read more

I don't believe that Arceus is number one. I thought Arceus would be third or second. He is the strongest Saiyan in history. Without him, no one could get destroyed. He has more than a thousand forms.

It's justified to be the strongest of all Pokemon because it created the rest of them. Also, those shards are really helpful and kickass.

Arceus is the god of Pokemon. It has immunity to all attacks. Even though Dragon-type moves are typically effective against Dragon-type Pokemon, Arceus is immune. I saw this in the Arceus and the Jewel of Life movie. Dialga, Palkia, and Arceus fought each other. Before Giratina entered the battle, Dialga and Palkia attempted to defeat Arceus. Palkia used a Dragon-type attack, but Arceus transformed into Draco-Arceus (violet color) and took no damage from the attack! I was amazed by this.
Then Giratina joined the battle because the other two Pokemon were unable to continue. Even though Arceus granted Giratina nearly the same power to rule the other dimension, Arceus remained unaffected because Ghost-type attacks cannot harm Normal-type Pokemon like Arceus!
Mewtwo

Mewtwo is a Psychic-type Legendary Pokémon. Designed by Ken Sugimori, it first appeared in Pokémon Red and Blue in 1996.
Created by Dr. Fuji through gene splicing to clone Mew, Mewtwo is known in game lore as one of the most powerful Pokémon. In later games, it can undergo Mega Evolution into... read more

So far, Mega Mewtwo Y has the second-highest stats in all of Pokémon, only behind Arceus, who is obviously supposed to be omnipotent. (The anime is designed to make Arceus appear weaker in order to give Ash and his friends an actual mission. Do not be fooled.)
Mewtwo is a Psychic type, which is one of the more top-tier types. When properly trained, it's harder to defeat than others like Bug types. While Bug types are super effective against Psychic types, they are only strong against a few other types. Besides, Bug types are often only viable early in the game, for instance.
Mewtwo is also the genetically advanced clone of Mew, making it naturally difficult to defeat.
Rayquaza

Rayquaza (pronounced "ray-quay-zah") is a Dragon/Flying-type Legendary Pokémon species in Nintendo and Game Freak's Pokémon franchise. It serves as the mascot for the game Pokémon Emerald. Rayquaza can Mega Evolve into Mega Rayquaza if it knows the move Dragon Ascent and is not holding a Z-Crystal. According... read more

Seriously?! Rayquaza's the best! It's a destroyer in its own way. Anything that comes through its ozone layer will be instantly destroyed.
It even made a meteorite explode into a million pieces and also killed every legendary Pokémon during the fight with Hoopa. It deserves better and is way better than Mewtwo. I mean, okay, Arceus is the creator of the universe and all, but Mewtwo?! Come on, you can do better.

With base stats of 105/180/100/180/100/115 in its Mega Evolved form, it has the highest total base stat number of 780. Not only are these stats extremely well-rounded on the defensive side, but it's also an offensive powerhouse that can hold any other item, like a Life Orb for example. It also has the Delta Stream ability, which completely negates all Flying-type weaknesses, meaning it's only weak to Ice (2x), Dragon, and Fairy, all while retaining the Flying-type resistances.
The base stats of Mega Rayquaza already make it a top-tier Pokemon. The fact that it can hold any other item and also has the Delta Stream ability pushes it to the top in my opinion.
Mew

Mew is a Psychic-type Mythical Pokémon designed by Satoshi Tajiri. It was introduced in Pokémon Red and Blue and is notable for its ability to learn nearly every move in the games, with the exception of certain signature moves. Mew can also transform into other Pokémon using the move Transform.

Mew has been able to fight evenly with Mewtwo, but has never really gone all out, as was seen when Mewtwo was trying to beat him. Mew has also been shown to be the first Pokemon, as it has the DNA of all known Pokemon and was shown at the top of the family tree of Pokemon in the eighth movie.
He can transform into any Pokemon and is capable of performing any attack, making Arceus' ability to change types ineffective against him. These are both abilities which Mewtwo is unable to perform, as he is a clone and only his psychic abilities were emphasized and enhanced. Mew has also not been shown to have any limits and only became weak once when the Tree of Beginning was dying.
Giratina

Giratina is a Legendary Pokémon that first appeared in Pokémon Diamond and Pearl. It became the mascot of Pokémon Platinum, where it plays a central role in the game's story. Giratina is associated with the Distortion World and represents antimatter in the Pokémon lore.

Giratina was a total beast. It knows Destiny Bond! So, when he/she/it (I'll call it 'he,' by the way) is defeated, the opponent is dead too! Giratina could literally beat anyone. Shadow Force is like a move 10x stronger than Phantom Force, and it can break through all protections!
It should be number two or one because, um, Arceus is a bit way too strong? Okay, wait. Did you guys realize something terribly good about Giratina? Pikachu, the "BIG BOSS POKEMON" in the anime, used Thunderbolt on Giratina, and nothing happened. In "Arceus and the Jewel of Life," Arceus was screaming in pain and yelling. So, Giratina could literally beat Arceus too by simply stealing one of Arceus's plates by Shadow Forcing behind Arceus and taking one plate while Arceus isn't paying attention. Oh, so Giratina CAN beat Arceus!
Dialga

Dialga, known in Japan by the same name, is a Legendary Pokémon species introduced in Pokémon Diamond and Pearl, released in 2006. It represents time and is part of the creation trio alongside Palkia and Giratina. Dialga plays a central role in the lore of the Sinnoh region.

Dialga, with its Adamant Orb and Roar of Time, can defeat any Pokémon in a single move. The Dragon-type move, boosted by the Adamant Orb, already deals 2.0x damage, and the move itself is incredibly potent with a power of 150. Furthermore, even without this move, moves like Flash Cannon, Aura Sphere, and Earth Power prove to be more than sufficient in bringing down opponents due to Dialga's immensely high special attack.

Dialga is just an amazing Pokemon. With a dual typing of the two types with the most resistances (steel and dragon), Dialga can tank most Pokemon with the typing. Add that to its great defense and special defense, and it can be a tank. Also, it has a great move pool such as Aura Sphere, Flash Cannon, and Dragon Claw. Although it is not the best move competitively, Roar of Time is the coolest-looking move in any Pokemon game. No wonder everyone loves this Temporal Legendary.
Lugia

Lugia, known in Japan as Rugia, is a Legendary Psychic and Flying-type Pokémon introduced in Generation II. It serves as the mascot for Pokémon Silver and is considered the master of the three Legendary Birds. Lugia resides deep in the sea and is known to calm storms.... read more

Lugia is overpowered... that's all I have to say. But I will say more! In the anime movie with Hoopa, Lugia was holding out against a Demon Legendary, and Lugia could have fought longer if Demon Hoopa hadn't sent him away. Also, in the Pokémon Movie 2000, Lugia was said to be the king of the Legendary Birds. He also has the best entrance ever, bursting out of a whirlpool! I don't see Kyogre doing that! Also, he has his own theme song! Does Darkrai or Mewtwo have a theme song? I don't think so! (Not entirely sure on that...)

Lugia is an immense, draconic Pokémon with two giant wings that have a lot of power. Lugia has the ability Pressure, which causes the opposing Pokémon to double its PP usage in battles. Known as the guardian of the seas, Lugia is tremendously intelligent and very gentle with the life around it, despite its colossal size. Due to the fact that it can blow away houses with a single flap of its wings, it lies at the bottom of the sea. As the guardian, it can talk like human beings, which is a really good advantage.
Kyurem

Kyurem, known in Japan by the same name, is a Legendary Pokémon that debuted in Pokémon Black and White. It is a member of the Tao Trio along with Reshiram and Zekrom. Kyurem can transform into either Black Kyurem or White Kyurem using DNA Splicers with Zekrom or Reshiram, respectively.

Kyurem is an incredible Dragon with its Ice typing, and being able to fuse with either Reshiram or Zekrom makes it able to rival Arceus's strength. That almost made me wonder if Arceus and Kyurem (the Original Dragon) would be siblings, and if there were two to five Pokémon before anything existed way back then. Nothing is impossible.
It is funny because if Kyurem battled Arceus and lost, it would feel like it lost its pride. Another thing is that when I trained Kyurem in its normal form, it performed well after very hard training, almost like Giratina. I am a bit of a perfectionist, trying to make everything look good. After a while, I took my Kyurem and the others to challenge the Black Tower. I was excited to face it, so I did. I saved Kyurem for the last boss trainer. It did a bit of battling in the lower floors as backup, but the others felt weak compared to Kyurem. He had good endurance, just like my Emboar.
As for Emboar, I once defeated Iris, the Champion, with ease using only my Emboar, and it was my first time. I guess my perfectionism paid off. The same thing happened when Kyurem faced Iris's Pokémon. Iris was supposed to be the Champion? What a joke! When I heard she became Champion, I was kind of angry. The reason was because she is so young.
There was one trainer in particular I failed to defeat, Salon Maiden Anabel. She was the only one I never managed to beat. I was sloppy and overconfident during that time, but then I pushed harder. Anabel was the reason I tried to perfect everything. Later, I had almost the same experience again in the Pokémon World Tournament. I did not manage to win the international part, so I am pushing harder. Kyurem deserves to be somewhere between number six and ten, and that is that.
Palkia

Palkia, known in Japan by the same name, is a Legendary Pokémon species that debuted in the 2006 games Pokémon Diamond and Pearl. It represents space and serves as the mascot for Pokémon Pearl. Palkia is part of the creation trio with Dialga and Giratina and is associated with spatial manipulation.

This guy is the best among Giratina, Palkia, and Dialga. Why? Because unlike Dialga, Palkia's signature move does not require recharging, and I think Giratina's signature move takes two turns. Palkia's move is direct damage, and Dialga can even get killed by a Geodude with a Focus Sash and Earthquake. Or Giratina might get killed or two- or three-shotted by a Poochyena with Crunch and a Focus Sash.
In the movies, Dialga gets bashed around all the time, while Palkia does not. Plus, Palkia has fewer weaknesses, and he was even the first Legendary I fought. That is why I vote for him. He is really strong, and if you add Primal Kyogre's rain, his Hydro Pump can wreck enemies like a boss. He controls space, or something related to space, so he could carry the sun, ignore Solgaleo, and throw it at the world if he wanted to win easily.
Charizard

Charizard, known in Japan as Lizardon, is a Pokémon species created by Ken Sugimori. It first appeared in the video games Pokémon Red and Blue and has since appeared in merchandise, spinoff titles, and various adaptations. Shin-ichiro Miki, who voices James in the original Japanese anime, also voices... read more

So let's see. Weaknesses, ha. A lot of them. Well, let's start the count: Water, Rock, Electric. Now, the attacks he can learn.
Thunder Punch and Solarbeam = Bye-bye, Water types.
Iron Tail, Metal Claw, Steel Wing, and Brick Break = So long, rocks.
Earthquake, Bulldoze, and Dig = You know where I'm going.
So even though he has a lot of weaknesses, he also possesses powers to deal with them better than any Pokemon. And I think that is just more than enough to make him one of the strongest Pokemon.

Charizard is the best. He may not be as good as Arceus, Mewtwo, Mew, or Darkrai, but somehow I wish all these five would be number one. But no, Arceus deserved to be number one since he's god.
Charizard has been my starter in Pokémon Go, and in SoulSilver after I beat Red, I picked Charmander in Platinum. At the Battle Factory, whenever I had Charizard in my party, I never lost. His Flamethrower hits really hard, even on Water types, so that's why Charizard is my third favorite Pokémon.
Second is Darkrai, since he's the most kindhearted Pokémon in my opinion. My favorite is Arceus because he's god, but Charizard has a brave heart, and that's why.

The Newcomers

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Eternatus

Base total of 1125!
HP - 255
Defense - 250
The ultimate tank that makes even Blissey look like a glass cannon.
Mega Rayquaza was so overpowered that they made a separate tier for it. This Pokémon was so overpowered that players are not allowed to use it.
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Zacian

Zacian is a Fairy-type Legendary Pokémon introduced in Generation VIII. It is the mascot for Pokémon Sword and has a unique ability to transform into its Crowned Sword form when holding the Rusted Sword. Zacian plays a central role in the storyline of the Galar region and is often paired with its counterpart... read more

Good Sword and Shield Pokémon.

The Contenders

Darkrai

Darkrai, known by the same name in Japan, is a Dark-type Legendary Pokémon that debuted in Pokémon Diamond and Pearl. It is known for its signature ability to induce nightmares in others. Darkrai was also featured in the movie Pokémon: The Rise of Darkrai, where it played a central role.

You know why I love Darkrai? Not because he's awesome - which he is - but because of his role in the 10th movie.
I was injured, alone, and unloved when a young girl, Alicia, was falling from a cliff. Darkrai saved her. Then he befriended Alicia's descendants. Its one real friend, however, was about to die.
Palkia and Dialga battled, surrounding the whole city in a mystic white veil. If anyone ran into it, they would return to the city. As the battle continued, Darkrai was suspected and received tremendous hate from everyone except Ash, his companions, and his one friend. The city started to melt away as the battle progressed.
He was determined to save his one friend ever, but when he got hit by Roar of Time and Spacial Rend, he sacrificed himself for the city. This proves that any being can have a soul, and it makes me want to cry that a being so hated would save everyone.
Please, let's move Darkrai from number 10 to number 1.
Zekrom

Zekrom, known in Japan by the same name, is a Dragon and Electric-type Legendary Pokémon introduced in Generation V. It first appeared in Pokémon Black and White as the mascot of Pokémon White. Zekrom is part of the Tao Trio along with Reshiram and Kyurem.

Zekrom makes an amazing mixed sweeper because of how well-balanced its stats are. It can take out the occasional Ho-Oh that a trainer sends out, and with one simple Dragon Dance, it becomes an extremely fast and powerful sweeper that can wipe out almost everything it sees. I've even seen it sweep a Dragon-type Arceus in one hit without any stat boosts. These things are monsters.

Zekrom destroys Reshiram, even though Reshiram has better typing (fire/dragon). But, in my opinion, Reshiram was disappointing. First of all, Zekrom has a way better design than Reshiram. Blue electricity: now that is cool. Besides, Reshiram has that normal fire, just like any other fire-type Pokemon, while most electric Pokemon have yellow electricity. Zekrom should at least be in the No. 10 spot.
Deoxys

Deoxys, known in Japan by the same name, is a Legendary Pokémon that first became available through special events in Pokémon Ruby and Sapphire. It has four different forms: Normal, Attack, Defense, and Speed. Each form alters Deoxys's stats and appearance, making it a uniquely adaptable Pokémon.

It can have the highest stat in almost every category, and each form allows it to alter said stats to its advantage. In the Pokémon universe, I would say that Deoxys is most likely the strongest ever discovered. While Mewtwo was created from Mew by humans, and Mew created Pokémon on Earth, so to speak, Deoxys evolved from an extraterrestrial organism and found its way to Earth.
Arceus even got sealed up in some liquid metal goop in the movie and couldn't do anything. If anything, the only Pokémon that could stand up to Deoxys in matters of stat balance would be Mewtwo and Mew in the Pokémon universe. All other Pokémon would be wise to fear a misunderstood Deoxys, since that was the case in Destiny Deoxys... and look what happened to Rayquaza there. No questions asked, Deoxys is the most powerful at its maximum potential. I'd assume that would be how to properly rate these when they are at their best.
Ho-Oh

Ho-Oh, known in Japan as Houou, is a Legendary Pokémon species introduced in Generation II. It is the mascot of Pokémon Gold and is notable for its majestic, phoenix-like appearance. Ho-Oh plays a major role in Pokémon mythology and was the first Legendary Pokémon shown in the animated series, appearing... read more

He has monstrous attack, which is good in his case. His signature move has about 150 base power with STAB, and a 50% burn chance. He even gets access to Sky Attack, a 140 base power move with Flying STAB.
It actually has decent defense! Sadly, it, like many other fellow fire-flying types, suffers a huge impact from Stealth Rock and Rock attacks. Sorry, Charizard, Moltres, Talonflame, and Ho-Oh! But the weird part is, in my HeartGold game, I brought in my Ho-Oh in on an incoming Machamp, not thinking about coverage for Flying types. I used Fly, not knowing about No Guard, and it used Rock Slide on me. I thought I screwed up, but then, it survived the hit! Then, I beat the league. Thanks, Ho-Oh!
Reshiram

Reshiram, known in Japan by the same name, is a Dragon and Fire-type Legendary Pokémon introduced in Generation V. It first appeared in Pokémon Black and White, released in 2010. Reshiram is part of the Tao Trio, along with Zekrom and Kyurem.

Reshiram NEEDS to be at least No. 11 or No. 10 on this list. Just because Zekrom looks cooler doesn't mean he's any stronger. I believe that Reshiram looks cooler and is just as strong. Based on stats, they both have a stat total of 680. Both are average in speed and good with everything else, meaning they're pretty much exactly the same.

Reshiram should at least be next to or close to Zekrom, maybe even higher, because it has more Special Attack. It deserves a place in the top 10.

Lots of people seem to think Zekrom is more powerful than Reshiram, and I'm quite offended by that! Reshiram looks a lot cooler than Zekrom, and their base stat totals are the same. Reshiram should be at least in the top 7.
Groudon

Groudon is a Legendary Pokémon species introduced in Generation III. It serves as the mascot for the game Pokémon Ruby. Groudon is known for its ability to expand continents and is part of the Weather Trio alongside Kyogre and Rayquaza.

Groudon has 3 weaknesses: Water, Ice, and Grass. But now he has a Red Orb, which can evaporate water, so Water is no longer a problem. He turns into a Fire type when he uses the orb, so goodbye Ice and Grass. But sadly, he gains a new weakness, which is Ground. So he loses 3 weaknesses in return for gaining 1 weakness. Do the math, people: 3-1 = 2. The orb gets rid of 2 weaknesses for him. If he doesn't have the orb, then he's screwed.

Oh my gosh. Those of you who didn't vote for this guy clearly haven't faced its Primal form. Primal Groudon is a total beast. It gains the Fire type, which seems okay, as it makes it even weaker to Water-type moves, but then you see its ability: Desolate Land.
This ability turns the sunlight extremely harsh, so not only does it boost the power of Fire-type moves, but it also completely nullifies the effect of all Water-type moves. Simply put, this thing is completely unstoppable. People say Mega Rayquaza is overpowered, but I can deal with that one. What I can't deal with is this big red monster.
Kyogre

Kyogre, known in Japan by the same name, is a Legendary Pokémon species. It first appeared in Pokémon Ruby and Sapphire, released in 2002. Kyogre is associated with rain and the sea, and it is part of the weather trio along with Groudon and Rayquaza.

*Ahem* For all the Kyogre lovers, I've made a list that proves Kyogre is superior to Groudon:
Groudon and Kyogre have tied base stat totals. However, Groudon takes a more physical approach, while Kyogre focuses more on special moves. Ironically, Groudon learns very few physical moves, whereas Kyogre mainly learns special moves.
I've conducted some more experiments to prove that Kyogre is better than Groudon, at least in competitive play:
1. Even if Groudon's ability overrides Kyogre's, Kyogre still has Ice Beam, which remains super effective.
2. Kyogre's ability, Drizzle, doesn't just make Thunder have 100% accuracy. It also grants Hurricane 100% accuracy. Furthermore, Drizzle enhances Water-type moves, weakens Fire-type moves, and halves the damage from Solar Beam.
3. Groudon's ability, Drought, does NOT enhance Ground-type moves. In fact, Groudon has only eight moves that actually synergize with its ability. Seven of these are Fire-type moves, which are all special (Groudon has a poor Special Attack stat). The eighth is Solar Beam, which is Groudon's only effective method to faint Kyogre, aside from Earthquake.
So should you choose Omega Ruby (Groudon) or Alpha Sapphire (Kyogre)? Well, the choice is yours, but it will depend on what your team will be. If you use mostly Fire-types (or Pokémon with Solar Beam), then Omega Ruby would be a better choice for you. However, if you have a Water-type team (or Pokémon with Thunder and/or Hurricane), then Alpha Sapphire should be your choice.
My planned team will include:
- Swampert
- Gardevoir (Mega Evolution)
- Roserade
- Flygon
- Kyogre
- Rayquaza
Ditto

Ditto, known in Japan as Metamon, is a Normal-type Pokémon introduced in Generation I. Ditto is known for its ability to transform into other Pokémon using its move Transform. It is often used for breeding due to this unique capability.

Not only can Ditto transform into any Pokemon it wants to, but it can also transform into anything it wants to. AKA, it could become your bed, your house, your town/city, your country, the world, the solar system, the galaxy, the UNIVERSE. A group of Dittos could replace your friends and family. A Ditto could replace you.
Every time you walk anywhere, that rock? It's a Ditto. That stick? It's a Ditto. That grain of sand? That speck of dirt? That speck of dust? They're all Dittos. You are walking on a Ditto. You are looking at Dittos. YOU ARE A DITTO.
Not convinced? A Ditto could transform into a black hole, killing everything. If that's not powerful, I don't know what is.
Dragonite

Dragonite, known in Japan as Kairyu, is a Dragon and Flying-type Pokémon introduced in the first-generation games Pokémon Red and Blue. It evolves from Dragonair starting at level 55 and is the final form of Dratini. Dragonite is known for its kindness, intelligence, and powerful presence in battle.

Nobody here realizes it because they are all voting for legendaries, but look at this thing's stats, which beat out approximately 65-70% of the legendaries, and the move pool that this thing possesses. Tell me that Dragonite shouldn't be on the list. He has high attack and special attack that trump most Pokemon in the series, and enough defense to take almost anything but a good Blizzard or Ice Beam. His speed isn't high, but he doesn't need it unless he's up against a good Mamoswine or other powerful ice types. While this Pokemon is beaten by Mewtwo, Mew, and Arceus, this thing deserves at least 6th or 7th place.

Seriously, you guys, Dragonite had the highest stats besides legendaries and megas for a long time. Slaking may have more stats, but Slaking has Truant, which is the most useless ability ever.
He is a Dragon-type and can learn tons of extremely powerful moves and has insanely high stats. He is also the signature Pokémon of the coolest trainer, Lance.
Yveltal

Yveltal is a fictional creature in the Pokémon franchise. Introduced in the sixth generation, Yveltal is a legendary Dark and Flying-type Pokémon and the mascot of Pokémon Y. It is known as the Destruction Pokémon.
Yveltal can absorb life energy, and when it reaches the end of its life, it draws... read more

Come on! Xerneas is definitely the weakest Pokemon in the universe. My least favorite Pokemon is Xerneas, and my favorite is Yveltal. In the anime, they just think of it like, "Oh, it represents destruction, death, and villains. It's a Dark type, so it's a bad guy!" How dare they think that! Anyone who says that would get slain by Yveltal's Oblivion Wing!
Yveltal is way stronger than idiotic Xerneas. Reasons: 1) Yveltal even looks cooler. 2) Bigger and stronger. 3) Two types vs. one type. 4) Better moves like Double Team. Imagine sixteen Yveltals versus one Xerneas. 5) Knows Disable. Disable is an attack that stops the opponent from attacking for so many turns without having a secondary effect. 6) (I like this one the most) Xerneas gives life. Yveltal gives death. So when they're battling, Xerneas can only give Yveltal more and more life, and Yveltal can suck all life out of Xerneas.
Xerneas

Xerneas is a legendary Fairy-type Pokémon introduced in Generation VI. It is the mascot of Pokémon X and is classified as the Life Pokémon.
Xerneas can share eternal life, a power it uses when the horns on its head shine in seven colors. When its life comes to an end, it releases life energy to... read more

Xerneas is pretty overpowered with its ability Fairy Aura, which boosts Fairy-type moves, like the popular and powerful Moonblast. And if you give it a Power Herb and use Geomancy, it'll boost its Speed, Special Attack, and Special Defense. It will, no joke, decimate opponents. It'll also take less damage due to its enhanced Special Defense, which I think is really neat.
I really like this Pokemon, and it's pretty good competitively, so it's your go-to (well, it's genderless, but whatever) in a pinch.

Do you people even play Pokemon? It clearly says strongest, not coolest. Stuff like Florges and Goodra are way stronger than Charizard (Florges has base stat totals of 552, while Charizard has 534). So yes, flowers and giant pseudo-legendary goo dinosaurs are stronger than fire-breathing dragons. And a rainbow deer is over three times better than an ugly fire-breathing dragon who faints when anything uses a rock move.
Tyranitar

Tyranitar, known in Japan as Bangiras, is a dual-type Rock and Dark Pokémon introduced in Generation II. It evolves from Pupitar starting at level 55, which itself evolves from Larvitar at level 30. Tyranitar is known for its immense physical strength and powerful offensive capabilities.

Seriously! Only 20? Tyranitar is such a beast. He could destroy anything and everything. Quiet, Ditto. I know you can turn into anything, but it's anything that Tyranitar could crush by lifting only a finger.
When he rampages, he knocks down entire mountains and buries rivers. Maps also have to be redrawn afterward. He is 6 feet 7 inches and can completely change the landscape. That is the definition of a strong Pokémon right there. Kyogre is almost as strong, but I have this unwritten rule about using legendary Pokémon for battling in the games.
Tyranitar is and always will be my favorite Pokémon. It will never change, mostly because I don't really like generations 5 or 6 too much.
Garchomp

Garchomp, known in Japan as Gaburias, is a dual-type Dragon and Ground Pokémon introduced in Generation IV. It evolves from Gabite starting at level 48 and is the final evolution of Gible. Garchomp resembles a dragon-shark hybrid and is known for its speed and power in battle.

Baah, why is he so low? It is so powerful, and in my opinion, the BEST dragon type and my favorite Pokemon. It is fast, and its Outrage destroys lives. It also has good speed and decent bulk. It can also run good special moves like Fire Blast because it has decent special attack. That is the making of a powerful Pokemon, my friends.

Remember his name. This Pokémon caused terror in the competitive scene for many years. Your team was doomed to fail if you didn't have a counter for this guy. His reign of doom was finally over after he got banned from standard battling. Oh yeah, did I mention that he is a shark? A shark that lives out of the water?
Regigigas

Regigigas is a Legendary Pokémon known by the same name in Japan. It first appeared in Pokémon Diamond and Pearl and is a Normal-type Pokémon. Its ability, Slow Start, halves its Attack and Speed for the first five turns of battle, making it a strategic challenge to use effectively.

PUT HIM HIGHER! What the hell? He is seriously at number 29 right now. His absurdly high strength and his Heavy Slam can beat any smaller Pokemon easily, and when your health is almost gone, Crush Grip can wreck your opponent. Let's not forget about his super strong Giga Impact (150) combined with 160 Attack. There is no way he is lower than the top 15.

Regigigas rules. If it can tow entire continents, it can sure as heck beat Arceus in a battle. Of course, Arceus is more powerful in that it has more powers, but Regigigas is stronger.
Blastoise

Blastoise, known in Japan as Kamex, is a Water-type Pokémon and the final evolution of Squirtle. It evolves from Wartortle and is known for the powerful water cannons mounted on its shell. Blastoise is capable of shooting water with enough force to punch holes through steel.

Blastoise is indeed my role model. He has a Mega Evolution (Gen 6) and is one of the only Water-type starters to maintain the only Water type throughout all three of his evolutions. As a Squirtle, he can learn Bite early on, which can be upgraded to Crunch through the Move Relearner. Additionally, in Generation 6 games, this can be upgraded to Dark Pulse, a really good Dark-type move.
Being solely a Water type, he has only two weaknesses: Grass and Electric. First of all, Blastoise can learn Earthquake, which is enough to wreck most Electric types. He can also learn Ice Beam, giving him a super-effective move against Grass types.
Some people may say that Swampert is better, but no. Swampert does negate Electric-type damage, but the sacrifice is too great. He is 4x weak against Grass types, his only and fatal weakness.
Anyone who says Blastoise wouldn't win in a Kanto starter Battle Royale is being ignorant.