When Ivan Ooze tells Zordon of all the things he had missed when trapped inside his containment egg, the black plague and the Spanish Inquisition were scripted examples, but actor Paul Freeman ad-libbed the last line, "The Brady Bunch reunion!"
The production placed an ad in a Sydney newspaper, telling fans to "come and see the fireworks show with the Power Rangers at Darling Harbour." It was a ploy to get people for the final crowd scene, so the producers wouldn't have to pay for extras.
This was the first Power Rangers feature to use 100% new material. The TV shows used action scenes from the Super Sentai series in Japan.
In an original script, the Rangers were supposed to fight giant Rat Monsters that Ivan Ooze created. Because the suits didn't work well enough and looked "too low budget" for the movie, the Rat Monsters were instead replaced by the Ooze Creatures that Ivan creates in the film. However, the Rat creature suits didn't go to waste either. Instead, they would later appear in the "Return of the Green Ranger" storyline of the Power Rangers television series.
When Dulcea asks Adam what's wrong, he answers, "I'm a frog." At the 2007 Power Morphicon, Johnny Yong Bosch said he ad-libbed the line and insisted that it be used in the movie, because he felt the frog was a lame choice for his character.