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