David Yost is an American actor best known for his role as Billy Cranston, the original Blue Ranger, in the popular television series Mighty Morphin Power Rangers. He appeared in the show from 1993 to 1996 and became a beloved character among fans of the franchise. In addition to his work on Power Rangers, Yost has also been involved in various other projects, including film and television appearances. He has participated in conventions and events, connecting with fans and sharing his experiences from his time in the entertainment industry.