Generator Ben Part 2 is the thirty-fourth episode of Ben 10: Ultimate Alien. And a crossover with Generator Rex.

Air Date

April 8, 2011


After Van Kleiss returned to life, he and Vilgax work together to kill both Ben and Rex. Can Ben and Rex take down two strong villains for the price of one?


  • Ben Tennyson
  • Gwen Tennyson
  • Kevin Levin
  • Elena Validus
  • Julie Yamamoto
  • Ship
  • Alan Albright
  • Cooper Daniels
  • Helen Wheels
  • Manny Armstrong
  • Pierce
  • Kai Green
  • Mariella
  • Generator Rex
  • Bobo Haha
  • Agent Six
  • Dr. Holiday


  • Vilgax
  • Psyphon
  • Van Kleiss
  • The Pack:
    • Biowulf
    • Skalamander

Aliens Ben Used

  • Fourarms
  • AmpFibian
  • Water Hazard
  • Goop

Aliens Rex Disguised as Ben used:

  • Jetray
  • Humongousaur
  • Rath

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