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The Tennyson Trio is a series about Ben, Gwen, and Grandpa Max. Instead of one Omnitrix coming down to earth, 3 of them did, so all 3 of them have their own Omnitrix. Ben have the Ultimatrix from Ben 10: Ultimate Alien, Gwen has the Omnitrix from the original series, and Grandpa Max has the Omnitrix from Ben 10: Alien Force.

Ben's Aliens:

  1. Water Hazard
  2. AmpFibian
  3. Armodrillo
  4. Terraspin
  5. NRG
  6. Fasttrack
  7. Clockwork
  8. ChamAlien
  9. Shocksquatch
  10. Eatle

Gwen's Aliens

  1. Heatblast
  2. Wildmutt
  3. Diamondhead
  4. XLR8
  5. Grey Matter
  6. Four Arms
  7. Stinkfly
  8. Ripjaws
  9. Upgrade
  10. Ghostfreak

Grandpa Max's Aliens:

  1. Swampfire
  2. Echo Echo
  3. Humungousaur
  4. Jetray
  5. Big Chill
  6. Chromastone
  7. Brainstorm
  8. Spidermonkey
  9. Goop
  10. Alien X

Ben's Ultimate Forms:

  1. Ultimate Water Hazard
  2. Ultimate AmpFibian
  3. Ultimate Armodrillo
  4. Ultimate Terraspin
  5. Ultimate NRG
  6. Ultimate Fasttrack
  7. Ultimate Clockwork
  8. Ultimate ChamAlien
  9. Ultimate Shocksquatch
  10. Ultimate Eatle

Season 1:

  1. And Then There Were Ten Times Three
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