Board Thread:News and Announcements/@comment-25536964-20141016063845/@comment-24389754-20141018234227

Yeah,  he can be a hero or a villain, he can't be both. Although, perhaps there is another way Kevin 11K can come about:

Ben 10/Generator Rex:  Heroes United showed us that there is only ONE Null Void between universes. Now, as we all know, the Multiverse is infinit. So perhaps, Kevin 11K is a verson of Kevin that got sent to the Null Void but didn't turn good, and none of the Kevins ever met. As Ben put it in Voided, "Pocket dimension...  That's one big pocket."