Ben 10 Omniverse: Battle of the Bens! is a 1 1/2 hr special where Eon brings together a team of evil Bens from other dimensions, so Professor Paradox bring together a team of good Bens to stop him.
- Ben Tennyson/Ben 10 - The Ben from the main timeline.
- Gwen Tennyson/Gwen 10 - A Gwen from an alternate timeline where she found the Omnitrix instead of Ben.
- Ben Tennyson/Ben 10,000 - The future version of the main Ben who has the Biomnitrix.
- Kenneth "Kenny" Tennyson/Ken 10 - The 10 year old son of Ben 10,000.
- Ben Tennyson/Ben 23 - A Ben from an alternate timeline where he uses the "Hero Watch" for money, assumes all aliens evil, labels his own aliens with less clever names and his Grandpa Max is deceased.
- Dr. Benjamin Tennyson/Ben 12
- Brenda Tennyson/Brenda 63
- Jennifer Tennyson/Jen 10
- Eon - An evil Chronosapien Ben that wants to destroy him, in every dimesion.
- Albedo - A Galvan who through a DNA accident turned into a red eyed, white haired clone of Ben under Eon's mind control.
- Bad Ben - An evil version of Ben under Eon's control.
- Benzarro - An evil version of Ben under Eon's control.
- Mad Ben