Ultimate Alien X (Terraspin)
Ultimate alien x
Ultimate Alien X in Noah 10
General Information
Species Evolved Celestialsapien
Body Humanoid
Powers and Abilities
Abilities Omnipotence
Voice Actor Yuri Lowenthal

Ultimate Alien X is the Ultimate version of Alien X. He is an evolved Celestialsapien from the Forge of Creation.


Ultimate Alien X is a white humanoid with a star-like pattern across his body. He has 3 horns on his head. The Ultimatrix symbol is on his chest.

Powers and Abilites

Ultimate Alien X retains his omnipotence, however he loses Bellicus and Serena. This gives him total control over his powers and makes him the most powerful potential transformation in the Ultimatrix.


Technically speaking, this aliens has absolutely no weaknesses.

However, it could be dangerous if someone were to find a way to copy Ultimate Alien X's powers from the person using this form.

It may also prove difficult to even activate this form, as if Bellicus and/or Serena refuse to let Alien X evolve then it will not happen.


Noah 10

Ultimate Alien X

Alien X transforming into Ultimate Alien X.

In Noah 10, He is white with black stars all over him. He is basically the same, only he doesn't have Serena and Bellicus holding him back.

In Noah and Ben: The Ultimate Movie, he is captured by Vilgax and Albedo and they use his power and become a more dangerous threat than ever!

Ben 10: Ultimate Fusetrix

He is due to appear in Season 3, Episode 16 For Better or Worse of Ben 10: Ultimate Fusetrix. He is used to defeat Vilgax as a last resort.

Ben 10: Peace in Dimensions

  • Gwen 10 Returns Part 1
  • Spidermonkey Duel

Ultra Ben: Secrets of the Forge

Ultimate Alien X is used to defeat Vilgax who was enhanced with Alien X powers. 

Ben 10: Unlimited Dimensions

Ultimate Alien X is scheduled to make his debut in the series finale, Unlimited Power: Part 2 (episode name to change). He will only have a brief appearance, however.

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