VonHeimer is a former teacher at Akademi High School back when it was a school that taught basic skills for kindergarten age children. He is rude and incredibly racist towards Fish-People. Because of this the Fish-People took action and brutally beat his legs until they were unable to function. He now is bound to a wheelchair.
In his first appearance, he was shown as man protesting in front of the store, to kill fish people.
VonHeimer was also teaching kids about illegal stuff, as fish reproduction. He made fish look bad and forced students to kill fish-people.