Career
　　Gallagher is known for his television roles as Det. Joe Finn in Da Vinci's Inquest, the alcohol salesman in Entourage, Leon in The Line, Farhod the Fierce in Pair of Kings, and Ken Tanaka in Glee, and his film roles as Awkward Davies in Master and Commander: The Far Side of the World and Gary the bartender in Sideways. Gallagher also played Attila the Hun in Night at the Museum and its sequels, Chow in True Blood, Colquitt in Final Destination 3 Anderson in the movie Severed: Forest of the Dead, he also played the head of security, Hugo, in the short-lived series Endgame.
　　He has also made guest appearances in Battlestar Galactica, Smallville, Hawaii Five-0 and Intelligence.
　　Personal life
　　Gallagher was born in Chilliwack, British Columbia, Canada. He is of Chinese and Irish descent.