Guest Stars Donene Kistler as Alpha 6 Katerina Luciani voices Alpha 6 Derek Stephen Prince voices Elgar Danny Wayne Stallcup as Elgar Jason Narvy voices Eugene 'Skull' Skullovitch Lex Lang voices Rygog Ed Neil as Rygog Scott Page-Pagter voices Porto John C. Hyke voices Pharoah Uncredited John McGee as Mr. Peabody