Tommy Oliver is a fictional character and an overarching main protagonist of the American live-action television franchise Power Rangers. He is best known as being the original Green Ranger and the first evil Ranger who fought and nearly defeated the original Power Rangers while under the control of Rita Repulsa. He was eventually freed from Rita’s spell and aligned himself with the other Power Rangers. He is a main character in the Mighty Morphin Power Rangers TV series, as well as four of its successive incarnations Mighty Morphin Alien Rangers, Power Rangers Zeo, Power Rangers Turbo, and Power Rangers Dino Thunder (where he returns as a legendary Power Ranger veteran). He also appeared in the Power Rangers Wild Force episode "Forever Red", the Power Rangers S.P.D. episode "Wormhole", the Power Rangers Super Megaforce episode "Legendary Battle", and in the Power Rangers Super Ninja Steel episode "Dimensions in Danger". He has been portrayed by actor Jason David Frank in all of his appearances with the exception of the episode "Wormhole", where he appeared only in Ranger form and was voiced by actor Jeffrey Parazzo (who played Trent Mercer in Dino Thunder). He was also infrequently portrayed by actor Michael R. Gotto in instances where the story required the character during childhood, such as in the series Mighty Morphin Alien Rangers. According to the character's history, Tommy is a legend among the Power Rangers community and is considered to be the greatest Power Ranger of all time, having been five different Power Rangers — the Green Ranger, the White Ranger, Zeo Ranger V–Red, the Red Turbo Ranger, and the Dino Thunder Black Ranger — and a part of four Ranger teams over the years. In addition, Tommy is a lifelong practitioner of the martial arts; during the first season of Power Rangers, he was referred to as having a third-degree black belt in karate. By Power Rangers Dino Thunder, he is a 6th degree black belt. ("Return of the Ranger", Power Rangers Dino Thunder – Collision Course DVD). Tommy also serves as a love interest to the original Pink Ranger Kimberly Hart before their separation. He later pursued a relationship with Kimberly's successor Kat Hillard.