|The characters and/or events depicted in this article belong to an alternate timeline or dimension.|
|Home World||Earth (RAT Timeline)|
|Affiliations|| Tennyson Family|
|Relatives|| Ben Tennyson (cousin)|
Max Tennyson (grandfather)
Carl Tennyson (uncle)
Sandra Tennyson (aunt)
|Alternate Counterparts|| Gwen Tennyson (Main Timeline)|
Gwendolyn Tennyson (Main Timeline Future)
Gwen Tennyson (Gwen 10)
Gwen Tennyson (Gwen 10 Timeline)
|First Appearance||Ben 10: Race Against Time|
Gwen is very similar to her other counterparts. At times she can be smart, hardheaded, and loving to people she cares about. This is deeply portrayed when her bond with Ben helped him to overcome Eon's personality.
During the course of the movie, it's revealed that Gwen goes to school with Ben and stops him from using the Omnitrix by saying it was a prop for the talent show. During the quest to find and destroy Eon, she shows deep concerns for Ben when he isn't taking anything seriously. Once Ben does become overwhelmed by Eon's DNA, her bond with Ben is what brings him back. Eventually, the two get back to school and end up second place in the talent show.
- Ben 10: Race Against Time (first appearance)
Ben 10: Ultimate Alien
- Ben 10,000 Returns (first re-appearance; cameo)
- Throughout the movie, Gwen never used any of her magic spells.