The animation model for King Ahgo was designed by artist Dale Hendrickson. The models designed for this installment were finalized on December 20, 1984.
The landscape of Spikeheart is a reused background of the geyser field from A Friend in Need (1983).
In an earlier versions of the script, the Crystal Castle was known as the Palace of Power. The name was changed on November 6, 1984.
In the original script, instead of having the appearance of a rainbow, Light Hope was described as 'nothing more than a pair of large red eyes which rise out of a mystic pool'.