Guest Stars Frank Welker voices Lance Goodwin Casey Kasem voices Alexander Cabot III/Jack Canna's Partner/Ghost of Injun Joe Don Messick voices Sebastian the Cat/Captain Cannaby/Jack Canna/Ghost of Captain Scavenger Jackie Joseph voices Melody Valentine Janet Waldo voices Josie McCoy John Stephenson voices Johnny Briggs Sherry Alberoni voices Alexandra Cabot Jerry Dexter voices Alan M. Mayberry Barbara Pariot voices Valerie Brown