Strongest Ben 10 Aliens

The Top Ten

1 Alien X

Alien x can do anything. He can fix every thing. His power is unbelievable. He is the strongest of al

Ben is afraid that alien x may be too powerful to control. And only uses in dire situations

alien x has extreme power which allows hin to destroy any thing in his way, but because of this immense strenght he freezes for a long time

He can create universe destroy it what else you want

V 183 Comments
2 Ultimate Way Big

Ultimate way big is the most powerful of all because he has the ability to fly and is three times bigger than the old form and can shoot from his arm instead of crossing it

He is big enough to throw waybig

How is way big higher than ultimate way big ultimate way big can do every thing that way big can do plus more can way big fly no see and alien x is like number 20 you need to make sariina and belakus agree first wich is like the hardest thing in the world to do

Ultimate waybig is better than alien X because he has beaten the real form of vilgax,which had been given alien X a good battle

V 39 Comments
3 Ultimate Ben

This is so damn stupid ultimate ben the power of alien X and every other alien! So how are way big, ultimate way big, and alien X better than ultimate ben!? Ultimate ben is the best! People can go on and on but this guy is gonna come out on top. For the last time, ultimate ben is the best

He is every alien! He should be number 1!

He should be on top those are all is aliens at the top he can even be better than them

Ultimate Ben is no1 this site is fool

V 30 Comments
4 Ultimate Humungousaur

At the peak of his power he will beat the thing, hulk, and even the juggernaut.

No he can't are raving mad hulk is strong like thor and thor in old days was invincible

He is very strong. He can turn his arms into firing missiles. He is the best

He is the best he can even defeat way big he should be the third

Ultimate Humungousaur is stronger than Ultimate Way Big. Normal Humungousaur can win againts Way Big,so the ultimate version is surely stronger than Way Bigs. Ultimate Way Big can win,but it depends if he is going to use his flying ability. When it comes 1v1 on the ground,Ultimate Humungousaur has far much bigger power,and if Ultimate Way big tries to laser him,Ultimate Humungousaur has a lot stronger skin than the normal one which we know is really strong,the laser wont do much.Plus the size is a factor which brings Ultimate Humungousaur positive side,cause he is about 20 meters tall and Ultimate Way Big 300. Ult. Hum. has a much better potentional for angles to punch Ultimate Way Big,he wouldn't be able to catch him,Ult. Hum. can literaly play with him.

V 15 Comments
5 Waybig

Way big threw vilgax into space and toppled a giant vilgax

way big can cause an earth quake just by punching.

way big is the biggest alien

What nonsense waybig maybe can at least at the 3rd place

V 23 Comments
6 Atomix

Its true that Alien X is the most powerful, but what's the point if you can't even use that power? Atomix defeated Ultimate Albedo, even when he used 2 Ultimate Aliens! Now who can beat that?

Atomix is explicitly noted by Derick J. Wyatt to be Ben's second most powerful form after the omnipotent Alien X. The surface of his power hasn't even been scratched, and considering that he has the power to make tiny, stable green stars with minimal effort, that's saying something.


He defeated ultimate humngusar and ultimate sprider monkey in a row

V 29 Comments
7 Ultimate Echo Echo

Ultimate Echo Echo can knock almost anything out easily

Ultimate echo echo sound wave is op making his enemies fall unconscious or even worse deserves to me in the top five or more

What isn't feedback on this list? He's by far one of the most powerful transformations and should definitely be on the top 10. Ultimate echo echo on the list but he isn't? Come on people!

Don't you know ultimate echo echo defeated kevin when he absorbed the ultimatrix and he was mix of all his aliens he should be at least 2nd or 3rd

V 12 Comments
8 Diamondhead

Diamondhead is made of hard crystals and can morph his arms into effective rudimentary weapons.

He was the only one other than way big to beat vilgax, he has amazing strength, diamond hard skin, and controls diamonds! He's hard to stop!

Diamondhead would be be one of the strongest because Ben's had most experience with him, as he practiced as Diamondhead the most. He beat Vilgax really easliy with him

it is good

V 12 Comments
9 Rath

Lemme tell ya something! Rath is the strongest alien and don't try to argue because you'll just make him ANGRY!

Rath is amazing if any alien tried battle him rath would win by a mile.

Rath will rip you with his claws

Lemme tell ya something alienx you want a piece of rath you will gett it

V 11 Comments
10 Upgrade

When there's ben 10 and generator rex crossing episode, ben upgrades rex's building machines! And that's so awesome!

Upgrade is a loser

Technomorphing on a planet scale says it all

I think upgrade is not best alien because in ben10 destroy all aliens movie, when he transforms upgrade alien Gwen wears her power, his omnitrix is destroyed
But I not saying totally waste, I want to give him 16 grade( rank)

V 2 Comments

The Contenders

11 Humongausaur

humongausaur is strong enoung to bench press pick up truck. and his strenght only increase with his size

He's getting bigger and stronger

Humongasaur is strong enough to hold way big
The strongest at ultimate

He's really strong

V 11 Comments
12 Feedback

My best alien FEEDBACK! Do you know how he kicks his opponents on the face dude he's awesome! But do you know before he was bens favorite alien

He connects with Ben the most and beat a giant malware who even way big couldn't defeat

He and take energy away and dish it out 10 times stronger

Feedback is very powerful

V 18 Comments
13 Chromastone

CHROMASTONE IS A POWER ABSORBING, LASER BLOCKING, INVINCIBLE CLONE. did you see how IN THE GAUNTLET he took on every single attack by cash and wasn't harmed at all. He must be made of crystal. All his energy bolts sting the baddies. No matter what attacks him he will survive.

He is awesome he is the original feedback but 10 times better he brought ben back to life and then HE CAN FLY feedback can't do that he is just a cheap remake of chromastone

He looks so awesome. It is like he is a powerful chrome stone.

It's a gay diamondhead

V 13 Comments
14 Swampfire

swampfire might look a walking compost heap. but he's the one of ben's strongest alien

swarp fire is powerful alien because he never broke

Swampfire is cool in omniverse


V 5 Comments
15 Benvicktor

Ben victor has an electric body that is a good advantage for his body

He is avery strong and full of electricity

That is so not true

What's whith the thinnggi like a driller on his shoulder?

V 3 Comments
16 Big Chill

Big chill can pass through solid matter and drop the temperature of anything he choose to nearly absolute zero

I love how he talk and also I think that big chill could beat up ultimate way big because he can invisible and go through anything

He can change the temperature of a place and is invisible

Ivisiblity, flight, eats metal, freez attacks close and ranged.
One of the few alien that can survive out in space.

V 3 Comments
17 Eon

Eon is awesome! He can travel through time! He can destroy every time line and can rebuild them in his image!

He is villain! Dude

I hate him
He is really bad
He vanish swampfires and waybig

18 Clockwork

He can't destroy alien-x as alien-X doesn't need time and it won't matter if time is stopped or not Alien-X will never move but even when it is frozen you cannot make a scratch on alien-X

Clockwork should be much higher

Clockwork should be number one when he's in a fight he can just slow down time and beat everyone up

He is powerful after alien x

V 7 Comments
19 Goop

there's more to this giant glob of goo than meets the eye. goop is able to change of his body at will

Goop is the best alien ever. I mean seriously he is made of acid and goo he is the BEST! You can not damage him! PERIOD

It is the best alien it should be first the most powerful alien who produces dangerous acid su

You know, goop can actually be better than swampfire. I mean, plants can be harmed by acid, so, goodbye swampfire or any other methanosian when in contact with goop.He also has shape- shifting abilities, can shoot, spray, or hose his slime that can be acidic or adhesive, can fit through anything, and, theoretically, can self- duplicate or grow into a large goop. Think about it, with his regeneration, his leftover slime can be sentient because that leftover slime is still ben, and the omnitrix might make another anti- gravity disc for the leftover blob. But that's just a theory, AN ALIEN THEORY, and no, I'm not matpat, I just stole his line.

V 6 Comments
20 Four Arm

4 arms, mean double the punch, He could fight any monster and win! The strongest by far.

I love four arms he can kick everyone s butt

Because he was chosen for a feat of strength when competing.

He is so awesome!

V 16 Comments
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List StatsUpdated 23 May 2017

2,000 votes
99 listings
7 years, 113 days old

Top Remixes (16)

1. Alien X
2. Ultimate Way Big
3. Waybig
1. Ultimate Ben
2. Alien X
3. Ultimate Way Big
1. Ultimate Ben
2. Alien X
3. Eon

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