The Halloween Trio Returns is the 3rd episode of the second season of Ben 10 Ultimate Alien.

Air Date

March 4, 2011


Ben and Elena investigate a old abbannded hardware store and he meets The Yenaldooshi, The Mummy, Dr. Vicktor again.

NOTE: Ben dresses Elena as Anna Nicole Smith in a pink dress (with a yellow wig) in order to make sure Dr. Vicktor tries to kidnap her, which Elena dislikes.


  • Ben Tennyson
  • Gwen Tennyson
  • Kevin Levin
  • Julie Yamamoto
  • Elena Validus


  • The Yenaldooshi
  • Thep Khufan
  • Doctor Vicktor
  • Argit (cameo)

Aliens Used

  • Benwolf
  • Benmummy
  • Benvictor
  • Swampfire
  • Echo Echo / Ultimate Echo Echo
  • Heatblast
  • Fourarms
  • Alien X

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