Negator's Robot Spider is the same design as Trap Jaw's Spider Drones from The House of Shokoti: Part 1 (1983) and will be seen again in Beauty and the Beast (1985).
The Temple of the Sun was previously visited in Temple of the Sun (1983) and The Great Books Mystery (1984).
Another character was designed to accompany the two keepers of the Temple of the Sun but not used. This design later appeared as one of Kinr Randor's warriors in To Save the Creatures (1985).