Gwen Tennyson/Earth-69

Gwendolyn "Gwen" Tennyson is the Human/Anodite cousin of Ben Tennyson.

Ben 10: Alien Universe

 * All, except Homesick Trilogy: Part 1, 10 Again, Artificial Consequence, and Ben 10: Invasion of the Omnitrix.

Back in Action: Alien Universe

 * All Shorts episodes
 * Ben 10 Returns

Trivia

 * The Gwen's from Gwen 10: Alien Force, Ben 10: Alien Queen, and The Other Gwen are from alternate timelines.