In 1999, Fehr broke through with a regular co-starring role on "Roswell" as one of a trio of aliens who are living as teenagers in the famed New Mexico site of a believed UFO crash. As Michael, he played the mysterious, hulking heavy of the gang who makes a point of constantly reminding his fellow extraterrestrials Max (Jason Behr) and Isabel (Katherine Heigl) of the severity of their situation after Max risked their cover by saving the life of human Liz (Shiri Appleby). Fehr's characterization of Michael made him likable despite his terminal seriousness, emerging as a level-headed if pessimistic rebel with a cause as he tries to stay a step ahead of authorities out to uncover the alien presence. The actor previously worked with "Roswell" executive producer David Nutter on "Disturbing Behavior" (1998), marking his feature acting debut with a small, dialogue-light role as one of the Stepford-like 'Blue Ribbons'. Fehr went on to more rewarding feature work, proving an asset to the casts of the 1999 lensed features "Christina's House", an independent co-starring Brad Rowe, and "Final Destination", a youth-oriented thriller starring a host of up and comers, about a group of students who inexplicably begin to die off after deciding against boarding what turns out to be a doomed flight. After a few appearences in minor films, Fehr was next cast in a highly visible role of Stuntman in the action film "Biker Boyz" (2003)