His most popular role was that of the lovable but none-too-bright Devil's Hole Gang member, Kyle Murtry, on the ABC comedy/western series, Alias Smith and Jones, starring Pete Duel and Ben Murphy. Fimple appeared in seven episodes and remains a favorite of fans of the series. In 1993-1994, he appeared as Garral in seven episodes of the Beau Bridges/Lloyd Bridges comedy/western series Harts of the West on CBS. His last role was in the 2003 Rob Zombie horror film, House of 1000 Corpses, as the foul-mouthed Grandpa Hugo.