Dr. Thomas "Tommy" Oliver (b. 1979[1] as Thomas Marshall) is the longest-serving Power Ranger of all time. He started as a transfer student at Angel Grove High School who was brainwashed by Rita Repulsa to become the Green Ranger and fought the Mighty Morphin Power Rangers, serving as the central antagonist of the five-part miniseries "Green With Evil". After the Rangers freed him from Rita's spell, Zordon created the White Ranger powers as a replacement for the depletion of the Green Ranger's energy, and the White Ninja Ranger of the Ninja Rangers.