Gwendolyn (Gwen) Tennyson is the paternal cousin of Ben Tennyson and one of Earth's heroes. She is also Kevin's girlfriend.

Appearance
She looks like Omniverse future Gwendolyn in the Ben 10k timeline.
Personality
She is a balanced character, and she is hard to remind. She always gives good advice to Ben and Kevin.
Powers and Abilities
Gwendolyn is an Anodite by 1/4, which means she can manipulate mana and is made by 1/4 of mana.
She also has good knowledge of Earth.
Weaknesses
She can be possessed by an Ectonurite.
Appearances
- Strange Sexual Tension (first appearance)
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