Titus Welliver, born March 12, 1961 in New Haven, Connecticut, is an American actor who played the role of Jimmy O'Phelan on the FX original series Sons of Anarchy. Making his debut on the episode "Balm" in the series' second season, Titus plays the role of a street boss and the face of the True IRA group who sold guns to SAMCRO. Playing a recurring role through the series' second and third seasons, he is generally regarded as Chibs Telford's archenemy, and as one of the three main antagonists in the series' third season (the others being Hector Salazar and Keith McGee), met his demise in the Season 3 episode "NS".