Ben 10 Fan Fiction Wiki
Ben 10 Fan Fiction Wiki
Gwen Tennyson
General Information
Species Human-Anodite Hybrid
Age 16
Affiliations Plumbers
Occupation(s) Hero
Powers and abilities
Abilities Mana Manipulation
General Anodite abilities
Magic Manipulation
Trained at various fighting techniques
Relatives Ben Tennyson (Cousin)
Max Tennyson (Grandfather)
Voice Actor Ashley Johnson
First Appearance Enter Assassins

Gwen Tennyson is one of the main characters that appears in the Crisis franchise. She is a protagonist in the miniseries Ben 10 & The Master Assassins and its sequel, Crisis: Broken Days. She is in the Earth-101 universe.


Gwen looks the same as she did during Ultimate Alien because designs never changed when Omniverse happened. She wears her pink shirt along with a black skirt, stockings, and high heels, and her hair is tied. She may also wear her other Alien Force/ Ultimate Alien outfits.


This section is a brief overview. For more detailed information, go here.

While on a summer vacation road trip with her grandfather and cousin, Gwen slowly learned how to use magic. She helped Ben fight villains. 5 years later, it is revealed that Gwen knows mana and it is revealed but she is of Anodite heritage. She made arch enemies of her own along the way, including Charmcaster and Hex. She developed a relationship with Kevin.

Ben 10 & The Master Assassins

Gwen does not play a key role in BTMA, she's a supporting character who helps Ben. She tries to convince Ben that the deaths are not his fault. In Mana of The Target, Gwen is targetted, however, she is one of the few targets that survives. She was devastated when Ben switches sides in Crisis Begins.

Crisis: Broken Days

Gwen becomes one of the leading characters in Broken Days. While Kevin believes Ben has completely turned evil, Gwen believes he can revert back.

Ben 10 & The Master Assassins | Crisis: Broken Days | Legend of Heroes | Dimensional Reality
Main Characters
Ben Tennyson | Gwen Tennyson | Kevin Levin | Roy Morgan | Joe Morgan
Recurring Characters
Professor Paradox | Azmuth | Rook Blonko
The Master Assassins (Leader)

Ben 10 & The Master Assassins Episodes

Enter Assassins | The Dudesman Theory | The Hunt For The Illuminati | Breaking News | Real Targets | Right On Time | Guilty As Charged | The Osmosian Target | Mana of The Target | Crisis Begins

Crisis: Broken Days Episodes

B | Good Knight


End of a Crisis

Legend of Heroes Episodes
Birthday Present | Most Powerful Man Alive
Earth-101 | Q&A
Crisis (Franchise) | Proto-Plumbers | Rick 10 | Bellwood Central | Gwen: The New Adventures
Khyber: The Journey | Ben 10: Across The Unknown World
Ultimate Alien X