Don Knotts shows such as "The Bill Cosby Show" and "Here's Lucy". In 1970, appeared as a Barney Fife-like police officer in the pilot of "The New Andy Griffith Show". In 1972, Knotts voiced an animated version of himself in two episodes of "The New Scooby Doo Movies": "The Spooky Fog of Juneberry", in which he played a lawman resembling Barney Fife, and "Guess Who's Knott Coming to Dinner". He also appeared as Felix Unger in a stage version of Neil Simon's "The Odd Couple", with Art Carney as Oscar Madison. Beginning in 1975, Knotts was teamed with Tim Conway in a
Billy Unger and "Scrubs". He also made an appearance on "The Tonight Show with Jay Leno". Unger has appeared in the films "", "You Again", "Monster Mutt", "Opposite Day", "Jack and the Beanstalk", and "Rock Slyde". Beginning in 2012 he began starring as Chase, the youngest of the super-human bionic teens, in the Disney XD series "Lab Rats". In 2016, he continued to play Chase on the "Lab Rats" spinoff series "", now credited as William Brent. Billy Unger William Brent Unger (born October 15, 1995) is an American actor. He is known for playing Chase on the Disney XD series "Lab