15 Times Sons Of Anarchy Cast Were On The X-Files
10. Emilio Rivera
His Role On Sons Of Anarchy: From the very first episode of the series, Rivera portrayed Mayan President Marcus Alvarez. Though his time on the show began with his club stealing the Sons' guns and burning down one of their warehouses, Alvarez and the Mayans were concrete allies to the club by the end of the series, with Jax having even hooked up the group with the gun business before his own death.
His Role On The X-Files: The seventh season episode "Orison" reintroduced serial killer Donnie Pfaster, who had been imprisoned since the second season. At the top of the episode, Rivera played one of Pfaster's fellow inmates, whose fingers were cut off in an electric sewing accident, giving Pfaster an unexpected opportunity to escape in the confusion.