Ultimate Alien X, Ben 10 List Wiki

Ultimate Alien X was the Ultimatrix's Ultimate Celestialsapien who doesn't exist. When asked if Ultimate Alien X is weaker than its regular version due to a mutation, Derrick J. Wyatt said that would be a dumb idea.

Ben Tennyson (Dimension 23), Ben 10 List Wiki

Ben 10 au list ultimate aliens, Wiki

Ultimate Alien X (Ben 10 Omniverse: Cosmic Destruction), Ben 10 Fan Fiction Wiki

Kai Green, Ben 10 Wiki, Fandom powered by Wikia

Khyber, Villains Wiki, Fandom

Alien X (Benzarro's Timeline), Ben 10 List Wiki

Alien Mode, Superpower Wiki

Alien XLR8, Ben 10 List Wiki

Gookinetic Shapeshifting, Superpower Wiki, FANDOM powered by Wikia

Ben Tennyson - Wikipedia