|Species||1/2 Human, 1/2 Osmosian|
|Voiced by||Greg Cipes|
Kevin Ethan Levin is a former nemesis of Ben Tennyson and one of the three main characters of Ben 10: Alien Force. He can absorb the properties of any surface and use them to fight with. Previously, he was one of Ben's most hated rivals, inasmuch as he tried to absorb the power of Ben's Omnitrix and succeeded, only to find his human form permanently mutated into a freakish combination of all ten of Ben's aliens. He returned in Ben 10: Alien Force after having been left in the Null Void for the rest of the first series. His DNA had later stabilized and he returned to his human self. He is now Ben and Gwen Tennyson's ally as they fight the DNAliens and enemies new and old.
Arrival in Nowhere
Kevin was sent out with Juniper Lee in the beginning of the war to search for Terrafusers. After two weeks of no results, Juniper Lee decided it was time to give up. Kevin told her, "Give us one more week and then we can go." Juniper Lee agreed and they adventured forward. After four more days of walking, they looked over the Devil Bluff's canyon and saw the Nowhere Triangle. They saw a Terrafuser growing there and informed Dexter. Dexter send a team of "Infected Zone Builders" to construct the current Nowhere Triangle infected zone. Dexter told them it was their job to keep an eye on the infected zone. Out in the Middle of Nowhere, they met Courage the Cowardly Dog, who happily invited them to stay there. Courage really was just scared of the Fusion monsters and wanted protection. To this day, Kevin and Juniper Lee remain there and hope one day to come back home.
- He was changed to his new design from Ben 10: Alien Force Season 3. He has so far not been updated with his Ben 10: Ultimate Alien design, which is exactly the same as his Alien Force Seasons 1 and 2 design.
- He is one of few characters that players are able to fight.