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 Janet Waldo voices Josie McCoy Sherry Alberoni voices Alexandra Cabot Jackie Joseph voices Melody Valentine John Stephenson voices Johnny Briggs Jerry Dexter voices Alan M. Mayberry Barbara Pariot voices Valerie Brown