Philip John Clapp, known professionally as Johnny Knoxville, is an American actor, stunt performer, filmmaker, and comedian. He is best known as a co-creator and star of the MTV reality stunt show Jackass, which aired for three seasons from 2000 to 2002. A year later, Knoxville and his co-stars returned for the first installment in the Jackass film series, with a second and third installment being released in 2006 and 2010, respectively. Jackass Presents: Bad Grandpa (2013), the first film in the series with a storyline, saw him star as his Jackass character Irving Zisman. Knoxville has had acting roles in films such as Men in Black II (2002), A Dirty Shame and Walking Tall (both 2004), The Dukes of Hazzard, The Ringer, and a cameo role as a sleazy corporate president of a skateboard company in Lords of Dogtown (all 2005), The Last Stand (2013), and Skiptrace (2016). He also voiced Leonardo in Teenage Mutant Ninja Turtles (2014).