Superbun is Buster Bunny 's superhero alter-ego. he is a parody of the DC Comics superhero, Superman, and the leader of the Just-us League of Supertoons.
He first appeared in the prologue to the New Class Day episode segment, The Just-us League of Supertoons when he crashed into a brick wall. He later appeared again in the episode segment when he called Batduck and offered him a place in the League, but after learning that Batduck doesn't have any super powers, he and the other league members kicked him out, only for Wex Wuthor to appear and plan to use his super-power transfer belt to suck all of their powers. After Batduck defeated Wex, SuperBun offered him a place in the League; as the new valet.
Flight: As shown in the beginning when she smashed into the brick wall.