Ryan Hurst from Sons of Anarchy also joined the cast.
From Deadline Hollywood:
Freddy Rodriguez has joined the cast of CBGB. The Six Feet Under star will take on one of the film’s leading roles, “Idaho,” an addict who hung around Hily Kristal’s infamous New York City club in the 1970s. Rodriguez, who also appears in the upcoming Code Name Geronimo, the John Stockwell-directed drama about the hunt for Osama bin Laden, is scheduled to start work on CBGB next Monday, June 25. Randall Miller is directing and writing the indie film about the club that saw the birth of American punk rock with bands like The Ramones, Blondie, Television and the Dead Boys performing on its tiny stage. Sons of Anarchy’s Ryan Hurst has also joined CBGB. The actor will play a biker named Mad Mountain who is a regular at the club and provides Hily Kristal with some much need help when the CBGB owner gets leaned on by local crooks.
And if you’re a little hazy on who Freddy Rodriguez is: