Kevin 11 (Original Mutation)

Kevin 11's History

After Kevin was defeated by the Omnitrix's feedback pulse in Kevin 11, he discovered that he had absorbed a sufficient amount of DNA from the blast. The Omnitrix had let loose every available strand it contained, allowing Kevin to switch between any of Ben's ten aliens. He was also able to access his own human form for brief intervals, putting him in a situation opposite to Ben himself.

However, during a fight with Four Arms on the Golden Gate Bridge in Framed, Four Arms put Kevin into submission and, at first, looked like he was going to kill him. Instead, he deliberately missed and walked away, stating that Kevin was never worth it. Kevin, however, wanted to continue fighting and got enraged. The rage of an untrained Osmosian, combined with all of the energy and DNA he had absorbed, caused his powers to spiral out of control, causing him to mutate into a hulking chimerical behemoth fusion of the ten original starter aliens of the Omnitrix, which Kevin dubbed "Kevin 11" (due to having all of the powers of all ten Omnitrix aliens plus his own).