They hosted alone for the first season and part of the second; mid-way through the second season, Kari Byron, Tory Belleci, Scottie Chapman and Christine Chamberlain, workers at M5 (Jamie's special effects company), began to take a larger part in the show and appear on camera more frequently, and they soon began tackling myths independantly, forming the 'build team'.
He is married to a woman, but never speaks about his private life on the show. In fanfiction for the show, he is often paired with Adam.Mythbusters is a popular science education show made by the US Discovery Channel, and a very small RPF fandom.Its hosts are special effects experts, artists and electrical engineers who test urban myths using their technical skills and expertise.He is obsessively interested in movies, sci-fi and various other aspects of nerd culture, and is a self-confessed 'props geek' and collector.
He is much more comfortable than Jamie on-camera, and in fact was at one point an aspiring actor (he did a semester at theatre school, but has no other post-high-school qualifications); he cheerfully humiliates and endangers himself frequently on the show, from donating various personal bodily fluids, to getting his temperature taken rectally on camera, to drowning himself repeatedly in the 'sinking car' myth. He makes fun of both himself and Jamie, and does a notable Jamie impression that involves him hanging his fingers down over his mouth like a moustache.He is totally bald, with an impressive walrus moustache, and always wears a beret and a white, long-sleeved shirt.