Top 10 Hardest Mario Bosses

The Top Ten

Cackletta's Soul - Mario & Luigi: Superstar Saga

You can beat this on your first try in the 2017 remake if both your characters on are on at least Level 30 and you are playing it on Easy Mode.

Fiery Dino Piranha at #1 and Culex not even in the top 5?! Oh, well. Flawed list is flawed. As for this battle, Mario & Luigi have 1 HP in this fight, Cackletta's attacks are very hard to dodge, she has high HP and you can only damage her once you've taken out her head and arms (Which rejuvenate, by the way)

Cackletta's Soul is 100+/100 hard (and Mario & Luigi: Superstar saga is average to good).

The Shadow Queen is 100+/100 hard (and Paper Mario: The Thousand ear Door is bad).

Elder Princess Shroob is 100+/100 hard (and Mario & Luigi: Partners in Time was mainly great).

Culex is 100/100 hard (and Super Mario RPG: The Legend of the 7 Stars is unbelievably great).

Bowser X is 100+/100 hard (and Mario & Luigi: Bowser's Inside Story is mainly bad).

Phantamanta is 100/100 hard (and Super Mario Sunshine is average to bad).

Bowser in the Sky is 74/100 hard (and Super Mario 64 on the N64 is beyond perfect/the DS version is average to good).

Bonetail is 100+/100 hard.

Tabuu is 96/100 hard on Easy, 100/100 hard on Normal, 100+/100 hard on Hard, 125+/100 hard on Very Hard and 150+/100 hard on Intense (and Super Smash Bros. Brawl is mainly perfect).

Fiery Gobblegut is 89/100 hard (and Super Mario Galaxy was a mainly average to good game).

This boss is no doubt the hardest boss Mario players ever played. No offense but this list is horrible. Cackletta should be number one.

The Shadow Queen - Paper Mario The Thousand Year Door

Equip with power bounce and every single item that could boost your attack+power lift will make this fight look like a joke

All I can say is that I've been trying to beat the shadow queen for about 8 years...

Without the help of the Shadow Siren Vivian, this boss is impossible. her attacks do so much damage! She can charge herself, making her even more devastating, and hit you, killing you almost instantly!

A boss so powerful you have to correctly choose a perfect ratio of health, flower power, and badge power throughout the game to even have a chance at winning. If you don't, you will never win.

Bowser X - Mario & Luigi Bowser's Inside Story

To reach Bowser X, you must do Boss Rush. You have 35 turns to kill Bowser X, and six enemies before it. Once there, Bowser X does ridiculously powerful attacks, and even eat your Bro. Items, and won't spit them out until 5 turns pass. And don't forget his 7000+ health, limited healing items, and almost unavoidable attacks. This should be #1.

This isn't the hardest Mario boss. This is the hardest videogame boss.

No contest, Bowser X is the hardest boss the Italian plumber has ever faced. What, he isn't a plumber anymore? Well he's always a plumber in my eyes, you can't stop me! Back on topic, let's list off the reasons why Bowser X destroys the other fights in the Mario series in terms of sheer difficulty. Let's start with the fact that Bowser has 7,000 HP, and you're on a turn limit. While the turn limit seems generous, with a maximum of 35 given to you, the other factors of this fight don't make it so forgiving. Firstly, Bowser X does insane damage, able to kill one of your bros in a few hits, sometimes he's able to one-shot you. And if Bowser X doesn't kill your other bro outright, you have to waste a turn reviving. Bowser also takes away your special items, which means you have to make as much use of them as possible. In other words, you need to have mastery on avoiding Bowser X's attacks (Which make Cackletta's Soul's attacks seem tame in comparison) and a mastery on each special ...more

This should be number 1. They start giving you a recommendation of level 50, which takes around a week to reach. And $#%@, this is so $#%@ing impossible while you still didn't reached this point, making this battle just not right. Well.

If you use a challenge medal it will be 100% impossible for players to beat this soul-meltingly challenge - HarjasPanesar

Culex - Super Mario RPG

Only reason why Culex isn't #1/2 is because not many have played that are on here...

Culex is crazy, unless you have lazy shell armor!

Putting Bouldergeist a few ranks above this is... Unbelievable!

This guy is impossible! How could Squizzard beat him? How could anything beat him? I strongly disagree with this list.

The reason this isn't #1 is because not many people have played the game or found him.

Culex is hard I haven't played the game he's in but he is hard

Elder Princess Shroob - Mario and Luigi Partners in Time

Beat this on my first try. Only got a game over 3 times in the entire game.

Took me FOREVER to beat her! Her Tentacle attack thing... IS IMPOSSIBLE TO DODGE IN HER 2ND FORM! Plus it took me forever to realize I am supposed to attack her crown... You only have a limited time to hurt her before her gold crown regenerates and then you have start all over again knocking off her tentacle-like legs, and then attacking the crown...

However, her theme is actually a very good!

The elder princess shroob started out small, with a few irritating attacks, like football charge and fireball cannon. However, she heals.
The next form however, can kill you in a hit. You need to destroy the gold crown with copy flowers or trampolines, to be able to injure the main body. Use mix flowers to knock off the limbs. After an incredibly long and tedious battle, you have the choice: die, or have that massive beast die.

I remember struggling so hard with this boss first time I tried. I did not connect the fact that the gold crown on top of her head reduced the power of my attacks so drastically... That and its THREE consecutive boss fights.

Bowser in the Sky - Super Mario 64

The most difficult Bowser: hard to avoid flames, harder to catch him by the tail, tedious to shoot him the bombs' right direction.

Yeah my thumb was so sore from turning the control pad. It's even harder when you miss and have to do it again.

This does not deserve to be, even in the top 10. This boss is hard the first time, yet the second time, it is easier. The rotation, timing, and dodging is part of this. One of the hardest techniques to dodge, must be the multiple flames.

He"s hard, but not that hard. Just get really far away from him and close to a bomb so he charges at you

Bonetail - Paper Mario The Thousand Year Door

Sure he's overall weaker then the shadow queen, but the fact of going through 99 floors of pain and miserable battles will lower your stats for the beginning of this battle

Bonetail should be stronger than Shadow Queen. It's much hard to beat him after going through 99 floors with stronger and stronger enemies. If you fail to beat him, you will have to go through the pit of 100 trials AGAIN!

I always used danger Mario and never failed. It did take me a few tries the first time as I wasn't prepared. The badge you get is very cool, makes up for the 1 star point you get

Many people agree that this is harder than The Shadow Queen... So why isn't this placed above The Shadow Queen?

Phantamanta - Super Mario Sunshine

The phantamanta is very hard to defeat, unless you stand on top of a tree. If you battle it alone, It splits up and attacks you from behind and all kinds of things like that. It is so hard to beat.

I gosh... Guys I've commented on tabuu bouldergeist and bonetail... And now this? I found it easy to take down phantamanta! Just take down 1 part at a time before all the angry little ones try and get u and you will be fine

Phantamanta in Sirena Beach is a giant manta ray that leaves behind electrical slime and splits into more rays every time you spray him. And the order of division is up to 6, with a cleft into 3 at the final stage, meaning that you will ultimately need to deal with ninety six little mantas to fight. Even worse, when only the small ones remain, they turn pink and actively chase you. And when going to refill FLUDD, you will find that the water pools are electrically charged.

It took me about 100-200 goes! But I am glad I had beat him! Also my favourite boss battle as well. Good times good times..

Tabuu - Super Smash Bros. Brawl

This is the final boss of smash brawl and I am not even here but I imagine him being brutal but this isn't tentecly Mario still probably bruatal

WHAT? THIS TOOK ME FOREVER TO BEAT HOW IS IT NUMBER 10 IT AT LEAST SHOULD B IN 5!

This boss really isn't that hard but ON INTENSE MODE! HE IS LIKE EASILY 1. I did say culex is hardest but nuthin beats tabuu on intense mode on here

Actually the shadow queen from paper mario was easy it was fast to beat but shes cool

Fawful Express - Mario and Luigi: Bowser's Inside Story

The 3ds remake made this boss battle much easier as Nintendo removed the use of microphone support and now you tap Bowser on the touch screen at the right time. I even beat all the giant battles in the game including this one on my first attempt.

I remember a few years ago this boss gave me trouble because you can only make two mistakes and that is it. If you don't win quick enough, then you will fall off the cliff and die. And you can't punch the train because it is very low. So you have to burn it which means you can't crush the train.

I hated this boss so much as a kid. The Mic on my DSI is terrible. You only get a few chances to mess up. And then it's game over.

I had more trouble with this boss than Daredevil Bouldergeist and Cackletta's Soul combined. Time limit bosses...

The Contenders

Bouldergeist - Super Mario Galaxy

Now you can argue the same for cackletta's soul being hard, but oh boy, here's a news flash.
If you survive her first attack, you can just use a nut and heal yourself making it just a long, tedious, fight that actually took me 30 minutes. But you can't just get your 6 life back on a daredevil run, nope.
And here's the funny part, bouldergeist was a tricky boss already, but now he's harder with the fact that if you slip up, game over.
I died about a whopping fifty times on this one boss until I overcame him.
Everyone has their own experiences but let's face it, it was at least hard to beat no doubt, we can't deny that.
Unless you that guy who's like "Noah what are you talking about I've been playing Mario since I was 2 and now I can't lose to anything in this game ever."
And all that.

Coming from the Ghostly Galaxy which is located in the Kitchen, this boss does not dissapoint. He is overall my favorite boss in the series and might even be in the whole Mario franchise. This boss has the right amount of difficulty to make the game more interesting. His first phase is pretty straight forward. What you have to do is hit the bomb boos which he summons, at his rock body. After doing this three times you meet his second phase. Whats diffrent about this phase is that he has arms and now could do more moves using them. Most are his fist punch, growing rocks, and his hand slam. Normally you get 3 or 6 lives depending on the amount of star bits you have. But on daredevil you cannot decide. You will only have 1 and you will have trouble.

The first round is easy but it's hard in the second round because his hands keep getting in the way so I can't hit him with bomb boos. Also the daredevil is super hard because you ALWAYS get hit at least once while fighting this boss so unless you fight him for an hour and learn how to avoid his attacks you're screwed.

Anyone who didn't vote for Bouldergeist either has never fought him or fought the normal version of him and thought he was easy. The harder version? The Daredevil Run. Yep. Daredevil Run. For Bouldergeist. I think it was luck that let me beat the Daredevil Run... On my 30th try (or something like that).

Smithy - Super Mario RPG

Uh... Smithy is nothing compared to Culex.

Smithy should be higher on the list than Bowser in the Sky. I could very easily beat Bowser in the Sky compared to Smithy.

Yeah I definitely agree

Dreamy Bowser - Mario and Luigi: Dream Team

This guy is hard! First you most likely would like to disable the arms. If you don't then your in trouble. The right arm makes sure that most of the time that you can't do damage to Bowser or his arm. The left arm is equally bad. Guess what. One second you have to players, the next you don't. He grabs Mario and Luigi and you can't use BP. Then even if you get those arms disabled, you got to beat Bowser himself. He can still use moves even with arms disabled like a hammer attack that You have a second to react and even you react correctly he still hits the other bro. Another attack where timing is everything so he shoots fireballs and then splits in two and shoots even more fireballs. Then where he runs at you and shoots 3 rays of fire. And don't you dare get me started on the minion attack. He spawns a bunch of his troops while he goes and eats which heals him tremendously and then the troops run at you and even if you dodge then Bowser Pounds the floor. Then that shy guy ship. again ...more

This isn't ranked high on the list because the game is new. This guy isn't as hard as Cackletta's soul or EPS but he's still difficult because his attacks do about 103 damage on each hit and you can't attack him until you destroy his right arm. His left arm will grab one of the bros so you will be unable to do bros. Attack. He will also heal himself including his arms which will bring them back to normal. He can also send troops to help him.

I tried to beat this boss a few years once I beaten the gigantic bowse4 and BOI is he hard maybe I was super rusty but I struggled so hard I died in the first few attacks

This has to be a joke. Mario and luigi SS has such a loose dodging system, and each of cackletta's attacks are simple, the only slightly hard one is when she summons balls of energy with her mouth. Dreamy Bowser, on the other hand, is a b! Tch. With his triple fire breath that follows with a shockwave, and the hammer attack that you must be 100% precise with, and him grabbing a bro with his left arm and throwing him, it requires an extremely accurate dodge. It already is harder than cackletta. That's not the end though. He will summon his minions, and go in the background to heal 150 Hp while you can't do sh! T to stop him from getting a few off. He heals his right arm, and before you can even attack the head again, he does it again, making damage you dealt moot. I have no clue why cackletta is rated as harder than this

Shrewd Possessor Ghost - Luigi's Mansion Dark Moon

I hate you ice monster. Even if I were to win in one try today, the pain you've caused over the years is too much to excuse. I love a good boss fight, but this one's not fun, out of place, and just plain frustrating.

Try it in the car. Then come back to me and tell me how hard it is to get three stars

Try beating him and getting 3-star ranking. Actually don't because IT'S IMPOSSIBLE!

The bombs bounce like crazy, and the tube arena makes it way too inaccurate

Firey Gobblegut - Super Mario Galaxy 2

This boss is easy. He's pretty much identical to his original form other than the flames. I always defeat him by running in circular motions.

I am amazing at the RPGs but I am terrible at regular Mario games especially Mario Galaxy 2 and this is the hardest boss

To easy shut it suckers

This boss is hard but I beat it twice.

Giant Baby Bowser - Yoshi's Island

And one of the best bosses ever. I love Super Mario World 2: Yoshi's Island, one of the best Mario games ever for too many reasons!

He is one of the hardest Bosses ever

What kind of a name is 'Giant Baby Bowser'?

Its fun and dificult

Dark Bowser & Dark Star Core - Mario and Luigi - Bowser's Inside Story

At first this boss might be a little tricky but it is actually pretty easy when you get used to it

Dark star core was a hard boss, I mean, what is with the limits of 10 turns, he goes back to dark Bowser, he heals himself, he heals dark Bowser, seems like you've done all that to remake it again

Can't inhale the stupid Fawful spider unless you improve Bowser's speed a whole bunch throughout the game. Nice soundtrack, though.

Easiest final boss in the franchise

Giant Bowser - New Super Mario Bros. Wii

I actually seen that this was the best Bowser fight in this series!

The final fight with Bowser in New Super Mario Bros. Wii is the hardest final boss in the entire SERIES! In the second phase, Bowser grows humongous and chases you down the hallway, while shooting incredibly big fireballs! Later on, magma waves appear as well, so you will need to keep track of Bowser, his fireballs, the lava flows, and an already impossible platforming challenge, all at the same time!

It's hard because you have to dodge attacks and do plat forming and make sure not to fall in the lava. How to make it harder: Don't use the Propeller Mushroom or bring along a friend or 2. Or 3.

This is only hard in multiplayer and not single player because you have to flee from him. 2 other players make it a nightmare

Tower Power Pokey - Paper Mario Sticker Star

I hate this fight a lot he just keeps healing and healing and HEALING

It is hard but it is too easy if you have a baseball bat

Just keep using thing stickers

Shadoo - Super Paper Mario

You MUST be prepared! Each have 100 hp, with 10 attack, but mario's hammer, Luigi's high jump, and bowser's attacks all are 20 attack each. AND you have to go through the flopside pit of 100 trials TWICE.

The game was the best, the music was the best, the story was the best, and the bosses were the best. And by that I don't mean that they were the easiest.

It is easy if you use Bowser and use your flames to knock them back and use barry to defend yourself the annoying thing that you have to do the pit twice. I had 90 hp, and 34 attack with Bowser, and it was not too hard, and it was pretty easy when I was flaming at it.

THIS SOULD BE HIGHER EACH OF THE CLONES HAVE 100HP THAT IS a lot IN PAPER MARIO AND THEY CAN DO 10 Damage that's a lot in paper mario and you have around 60HP

Crystal King - Paper Mario

Guess what this boss is easy put on a spike shield boss and you've beat him! He's so easy I beat him on the first try without any life shroom beside paper Bowser one and sensei form three are much harder

This guy is so easy. Just have on Spike Shield, Super Jump Charge, Mega Jump, (at least 1) power plus, defense plus and probably damage dodge.

I can't believe nobody put this on the list, This guy has 70 HP, Can heal 20, and has attacks that do 5 damage!

Use Watt at Super or Ultra rank.

Shrooboid Brat - Mario and Luigi Partners in Time

The Attacks Are Easy To Dodge, Although It Does Take A Long Time To Beat Him.

To be honest, he (she? ) was actually easy for me. It just took a small amount of level grinding.

How is she ahead of Antasma?

World 8 Bowser - Super Mario 3D Land

He could be a pain in the butt sometimes but he is easy for me

Not hard at all

Special 8 Crown

I’m 9 years old and I killed this boss no problem. Very easy

Firey Dino Piranha - Super Mario Galaxy

I feel sad that Galaxy is my favorite game and I don't know who this is.

Not hard but in the throwback boss speed run he is

The flaming tail is annoying but he's not hard

Not too terribly hard, but yes a bit annoying

Ludwig Von Koopa - New Super Mario Bros. Wii Ludwig Von Koopa is a villain in the Super Mario Franchise. He is the self-proclaimed leader of the Koopalings and has a pompous and arrogant personality. He is said to have all the powers of the other six Koopalings. He can clone himself, cause earthquakes, teleport, and shoot lightning bolts from ...read more.

If you are saying ludwig is harder Bowser I was stuck Bowser on for 10 days you hear that!

Um don't mind the previous comment Ludwig is really hard and that was 3 years ago when I had bad grammar so yeah...

Very hard you are on three tiny platforms and he shoots like five fireballs at a time

The only problem to his fight is you can slightly see where he lands so its kinda easy

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