Prince Coran

Coran was the only child of King Arion of Terrestria and its chief scientist, as well as the former villain Arriman.

History
Coran was born on Terrestria as the son of King Arion and his queen. He was only a baby when the battle against the Master was happening. Years later, he also became Terrestria's chief scientist. Coran eventually made a revolutionary breakthrough: a serum that would give the five warriors that protected Terrestria enhanced strength, speed, and agility. However, he tested it on himself and the mixture proved to be corrupted. One of the ingredients he used to create the formula proved to have been tainted by the Master’s remains, turning him into the Mutatrons’ new leader. He then used his toxic powers to corrupt the other scientists, making them his evil minions. To protect Terrestria as the war waged on, the warriors used the power of the Sabers to lift Terrestria into the sky and banished Coran, now known as Arriman.

Main Article: Arriman 

Wild Fury
For nearly a year, Arriman tried to destroy the Rangers, but eventually his long-buried memories of being Coran resurfaced. Once that happened, Arriman was torn between the two personalities at war within him. He had brief moments where he regretted what he had done as Arriman, but then the evil Arriman personality would reemerge and the aspect of him that was Coran was buried so deep that it couldn't interfere with Arriman's plans. Finally, Arriman decided to separate himself from Coran, even if it killed the latter, and he succeeded. However, Coran was in a coma for nearly a month as a result of being separated from Arriman. He finally wakes up and after having his hazy memories from his time as Arriman restored, he joins his father in helping the Rangers.