Ben 10 Planet

Alter Aliens

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  • Alter Alien Echo Echo
  • Becoming Ultimate Echo Echo.
  • Ultimate Echo Echo.
  • Swampfire
  • Becoming Ultimate Swampfire
  • Ultimate Swampfire
  • Big Chill
  • Ultimate Big Chill
  • Spidermonkey
  • Becoming Ultimate Spidermonkey
  • Ultimate Spidermonkey
  • Humoungousaur
  • Becoming Ultimate Humungousaur
  • Ultimate Humoungousaur
  • Jetray
  • Becoming Armodrillo
  • Armodrillo
  • Alter Aliens Ben to Mystery Alien and Swampfire to Ultimate Swampfire in Box.
  • Alter Aliens Ben to Mystery Alien and Echo Echo to Ultimate Echo Echo in box.
  • Alter Aliens Ben to Mystery Alien and Big Chill to Ultimate Big Chill in box.

The Alter Aliens Figures are a subline of toys in the Ben 10: Ultimate Alien toyline. They are one alien and then switch over to an another alien. They come in two packs only.

They transform from one hero to another providing you with two characters in one. Each set comes with Ben transforming into a mystery alien and another favorite hero who transforms from one alien to another or into the alien's new Ultimate form.

List of Toys

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