Ivan Ooze is a fictional character in the Power Rangers universe, the primary villain in the film Mighty Morphin Power Rangers: The Movie (1995). He was played by Paul Freeman.

Ivan Ooze was a tyrant 6000 years ago, until he was imprisoned in a Hyperlock Chamber (pictured) by Zordon and the 'Order of Meridian', who presumably were the precursers to the modern Power Rangers.

His hyperlock chamber unearthed by an Angel Grove construction crew, Ivan Ooze was released by Lord Zedd after 6,000 years of imprisonment. Demolishing the Command Center and fatally injuring Zordon, Ivan destroyed the Power Rangers' powers.

He travelled to the moon, and once there easily deposed both Lord Zedd and Rita Repulsa, trapping them within a snowglobe. Their henchmen Goldar and Mordant swore allegiance to Ivan rather than join Rita and Zedd in captivity. Ivan then began brainwashing the citizens of Angel Grove into digging up his Ecto-Morphicons, large insect-like machines similar to the Rangers' Zords.

After the Rangers gained the Great Power, they returned to Angel Grove and battled Ivan's machines with their new Ninja Zords . Ivan combined with one of the Morphicons, Hornitor, and took on the Rangers himself. The battle progressed into outer space, and though Ivan consistantly had the upper hand, he was destroyed when the Ninja MegaFalconZord tossed him into the path of Ryan's Comet, which happened to be passing.