Michael Bell Allstar Seaworthy Voice B.J. Ward Casey Kelp Voice Barry Gordon Wellington Wetworth Jr. Voice Nancy Cartwright Daffney Gillfin Voice Frank Welker Tooter Shelby Voice Brian Cummings Dimitris "Dimmy" Finster Voice Edie McClurg Mrs. Seaworthy Voice Clive Revill Galeo Voice Fredricka Weber Willie Wetworth Voice Olaf Wijnants Actor Carlo Boszhard Actor Angélique de Boer Actor Paula Majoor Actor Arnold Gelderman Actor Coen Flink Actor Tony Neef Actor Joseph Barbera Executive Producer William Hanna Executive Producer Freddy Monnickendam Executive Producer Carl Urbano Director