Yellow omni Retconned: Characters and/or events in this article are removed from the main continuity.

Gwendolyn Tennyson was originally Ben 10,000 and Kai Green's daughter and Ken's sister.


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In Ken 10, Gwendolyn was seen at Ken's 10th birthday party along with Ken's friends.



  • In Ben 10,000, Gwendolyn appeared during the battle with Vilgax. This was probably an error as Ken 10 is set 12 years after the episode, so she would not have been born or would have been a baby.
  • Gwendolyn and her brother were named after Ben's cousins, Gwen and Ken.[1]
  • Ben 10,000 does not have Gwendolyn as his daughter in Omniverse.[2][3]