Ben Tennyson (Classic)/Omniverse

After the events of Ultimate Alien, Ben is left to be a sole hero after Gwen and Kevin leave for college. However, Grandpa Max has other plans. He teams Ben up with a Plumber Rookie just out of training, Rook Blonko. Ben does not want to have a partner and tries refusing Rook, but in vain. Setting their differences aside, the two soon learn to work as a team and look out for each other.