Dr. Goatfish is an evil scientist and a member of L.O.V.E.M.U.F.F.I.N. He is seen in the episode "It's About Time!" at the Dr. Feelbetter show. His nemesis is Agent F (frog). The agents were all trapped as part of the scientists' plan, but after some agents got free, they managed to get all the other agents free as well. Agent D attacked his nemesis, while Agent F punched Dr. Goatfish, knocking him out, with his tongue.