Kevin Levin

Kevin Ethan Levin (formerly known as Kevin 11) is a character from Ben 10.

He is voiced by Michael Reisz and Charlie Schlatter in the original series and by Greg Cipes in Alien Force, Ultimate Alien, and Omniverse.

Kevin is a Half-Human/Half-Osmosian and a former arch enemy of Ben Tennyson. During Alien Force, Kevin quickly became Ben's friend and Gwen's boyfriend, as well as member of the Plumbers.

His father, Devin Levin, was a Plumber as well as Max Tennyson's partner. During a fight with Ragnarok, Devin was killed, forcing Max to send Ragnarok into the Null Void.