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"Grandpa" Maxwell "Max" Tennyson is the highest-ranking Magister of the Plumbers (noted as the leader of the Plumbers on some occasions), as well as the grandfather to the legendary Ben Tennyson as well as cousin Gwen Tennyson.

Ben 10: Alien Universe

Back in Action: Alien Universe

  • In New Girl, Max agrees to join the 10 Squad upon Ben's creation of the team.

Appearances

Ben 10: Alien Universe

Back in Action: Alien Universe

Tr​ivia

  • For whatever reason, Max's present self wasn't present when Paradox was showing the members of the 10 Squad footage of past Ben.
  • He has been romantically involved with Verdona Tennyson, an Anodite with whom he conceived his two sons and that he met while on patrol who finds Max to have a "spark all his own" (referring to what she calls "The Spark" she normally finds in Anodites such as Gwen).
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