Guest Stars Frank Gorshin as Seton Kellogg James Sloyan as Barney Smith Markie Post as Joella Cameron John Quade as Jolen Quince Nancy DeCarl as Sherese Robert Tessier as Marcos Anthony James as Varek James McEachin as Richard Selvan Co Starring Mel Blanc voices Twiki the Robot Felix Silla as Twiki the Robot Mitch Reta as Technician John Furlong as 1st Cop Seamon Glass as Pirate Victor Argo as Raphael Argus Richard Reed as 1st Rowdy Whitney Rydbeck as Hartsteen Gwenn Mitchell as Ticket Clerk Noniece Williams as Katrina Uncredited Eric Server voices Dr. Theopolis
