Ben Tennyson is the main character in Legends of the Omnitrix. There are two versions of him. The first is the galactic hero of the universe who is in Ben 10, Ben 10: Alien Force, Ben 10: Ultimate Alien,and Ben 10: Omniverse. The second is a 15 year old version of Ben, which has no memory of the previous version, and DOESN'T have the Omnitrix.
