Ivan Ooze is a fictional character in the Power Rangers universe, who appears as the primary antagonist in the film Mighty Morphin Power Rangers: The Movie (1995). He was played by Paul Freeman.[6] Though Ivan is depicted as pure evil, he has a comical and charming side to him shown throughout the movie, typical of other villains in the series. He has his own troops of soldiers including Ooze-Men that are easily destroyed by the Rangers and winged creatures called Tengoo (based on the Japanese myth of the Tengu) which he blew up when they failed to kill the Power Rangers.

Ivan Ooze was a tyrant 6,000 years ago, until he was imprisoned in an egg-shaped Hyperlock Chamber by Zordon and a small group of young warriors, who presumably were the precursors to the modern Power Rangers. When his hyperlock chamber is unearthed by an Angel Grove construction crew, Ivan was released by Lord Zedd after 6,000 years of imprisonment. Apparently, he was most angered by the boredom of his lengthy imprisonment, being forced to miss several disasters throughout Earth's history such as the Black Death, the Spanish Inquisition, and the 1981 reunion of The Brady Bunch. He also claims that he "had a Charley horse since the Renaissance." Ivan proceeds to demolish the Command Center and fatally injure Zordon and Alpha 5, leaving the Rangers powerless to morph, fight or even call their Zords.

After rendering the Rangers powerless, Ivan travels to the moon, and betrays both Lord Zedd and Rita Repulsa, trapping them within a snowglobe, much to their dismay. Their henchmen Goldar and Mordant then swear allegiance to Ivan rather than join Rita and Zedd in captivity. Ivan then begins brainwashing the parents of Angel Grove into digging up and repairing his Ecto-Morphicons (large insect-like machines similar to the Rangers' Zords) Hornitor and Scorpitron which he turns loose to rampage in Angel Grove. After this, he tells the parents to go and "leap to their doom", but the parents' children, with some help from Bulk and Skull, stop them.

After the Rangers gain the Great Power, they return to Angel Grove and battle Ivan's machines with their new Ninja Zords. Using these Zords, they are able to destroy Scorpitron. An enraged Ivan combines with Hornitor, and takes on the Rangers himself. The battle progresses into outer space, and though Ivan consistently has the upper hand, he is destroyed when theNinja Falcon-Megazord knees him in the groin, which sends him flying into the path of Ryan's Comet, which happened to be passing the Earth at this time.

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