Tom Oliver

Tom Oliver, previously also called Tommy is a clone of Tommy Oliver created by the Wizard of Deception. He is a clone of Tommy but bears none o his memories save for the ones he needed to defeat the Power Rangers and Tommy, then White Ranger. He even summoned Dragonzord and caused it to run amok in the city. After the Wizard was destroyed, however, his spell on the clone was removed and his evil left. The rangers were in the brink of dealing a final blow to Dragonzord with Thunder Megazord when the clone calmed it and returned it to the sea. The two Tommys then, one a Green Ranger and another the White Ranger traveled in time to save the other rangers in Colonial Angel Grove. There the clone stayed and the real Tommy christened him Tom Oliver.

Trivia

 * The episodes "The Return of the Green Ranger" mark the only time in MMPR, wherein all seven of the Mighty Morphin Power Rangers exist at the same time. Unfortunately they don't all engage in battle morphed at once.