Brandon Cole "Bam" Margera (/mɑːrˈdʒɛərə/ or mar-JAIR-ə; born September 28, 1979) is an American professional skateboarder, stunt performer, actor, musician, filmmaker, and television personality. He came to prominence after appearing in MTV's Jackass crew. He has since appeared in MTV's Viva La Bam and Bam's Unholy Union, all three Jackass movies, and Haggard and Minghags, both of which he co-wrote and directed.
Margera was born in West Chester, Pennsylvania, the son of April (née Cole) and Phil Margera. He is the younger brother of Jess Margera and nephew of Vincent Margera. His grandfather nicknamed him "Bam" at the age of three after his habit of running into walls. He attended East High School and cites friend Chris Raab as his only reason for attending high school.
Margera began shooting videos of himself and his friends skateboarding and doing stunts, which eventually turned into the CKY video series. He independently released CKY. CKY2K, CKY3 and CKY4 have also been released. CKY stands for "Camp Kill Yourself", a reference to the film Sleepaway Camp. These early videos feature many of Margera's friends, including Ryan Dunn, Brandon DiCamillo, Rake Yohn, Chris Raab, Brandon Novak and others who form a loose collective known as the CKY Crew. CKY is also the name of a rock band featuring his brother Jess, and the history and relationship between the video and band projects is heavily interlinked.