While many of his costars left the Power Rangers world behind after their three seasons of fame, Jason wasn't quite as ready to give up the suit. He played his character Tommy Oliver for a further 17 years after the first run ended, making his time in front of the camera, kicking alien butt over and over, an incredible 20 years in total.
As one of the most popular Power Rangers characters of all time, there was really no reason for Jason Frank (or Tommy Oliver) to ever give up. Tommy's been through many different versions, from the green suit to the white suit, and later becoming a Red Ranger and Black Dino Ranger (and paleontologist) in the show, mentoring the other Power Ranger teenagers as they protected the world from terrible acting.