The character model for King Tarmusk is a recolored and reused version of King Barbo from The Shadow of Skeletor (1984).
The effects animation used for the Time Wheel will be seen again when the Earth visitor's ship hops dimensions in Visitors from Earth (1985).
Charles Zembillas designed the different costumes that Orko conjures up for King Randor at the end of the story.
The first half of the animated sequence that shows He-Man punching the wall is based on the punch animated by Tom Sito that was first seen in The Heart of a Giant (1983).