Charlie Hunnam
Cast member Charlie Hunnam speaks at a panel for the television series ''Sons of Anarchy'' during the FX portion of the Television Critics Association Summer press tour in Beverly Hills, California August 2, 2013. Reuters/Mario Anzuoni

Currently in production for the show's seventh and final season, biker drama series "Sons of Anarchy" is gearing up for another explosive season as Jax seek revenge for his wife's brutal murder. To tease fans for its upcoming season, FX recently released 12 promo pics of the show featuring the key characters of SAMCRO including Charlie Hunnam as Jax Teller, Katey Sagal as Gemma Teller, Theo Rossi as Juice, Chibbs as Tommy Flanagan and Tigs as Kim Coates.

Lost without his true north, Jax will be needing some help for his revenge as he hunts for Tara's killer, thanks to Gemma who put a fork in a poor doctor's head. Grim Bastards will play a key role in Jax's revenge for "Sons of Anarchy" season 7 as he have his whole brothers in SAMCRO backing him up for more chaos and drama.

"They're definitely a part of it," revealed Malcolm Jamal Warner who will play as Grim Bastards T.O. Cross' "right-hand man" in an interview with Entertainment Weekly. "If you're gonna be on that show it's kind of cool that you're going to be the motorcycle gang that's like the charter club to Sons. So they definitely have our back and we definitely have their backs."

"The Cosby Show" actor also revealed that he was originally signed for one episode, but because of his character's recurring role and the gang's involvement with the Charming crew, he signed up from one episode to four. He also hinted that SOA fans can spot him in the show's finale and the rest of his Grim Bastards, Jamal will play the role of Sticky, the vice-president of the Lodi motorcycle gang.

After releasing the show's first official trailer, FX also released a number of promotional photos for "Sons of Anarchy" finale featuring Jax lighting a cigarette as he plans for his revenge in the black & white photo. In a smokey black & while photo, Chibbs, SAMCRO's vice-president will be taking on more responsibility while Jax is in prison for parole violation in the show's season 7 premiere.

"Sons of Anarchy" season 7 is set to kick off on Sept. 9.