Holden plays sharp-shooter Andrea on the zombie drama. After being separated from the group in the season two finale, she finds herself with a new friend and guardian this year in Danai Gurira's Michonne. Previous to The Walking Dead, her credits included The Shield and The X-Files.
Emily Kinney as Beth
Kinney plays the youngest of Hershel Greene's two daughters on The Walking Dead. After attempting suicide in season two, Beth has a new lease on life and will cling to family this year. Her credits include episodes of The Big C and The Good Wife.
Chandler Riggs as Carl Grimes
Riggs plays Rick and Lori's son, Carl. Last season, he put a final bullet in Shane, ending the short zombie life of his former father figure. Season three will see the young boy as more of a child soldier, as he takes on more of a protective role with the group of survivors.
Melissa McBride as Carol
McBride plays Carol, who last year developed a friendship with Norman Reedus' Daryl as the duo teamed to find her missing daughter. This year, she's set to take on a new skill set to help the group survive. Prior to The Walking Dead, she had roles on Dawson's Creek, PIrates of Silicon Valley and Walker, Texas Ranger.
Norman Reedus as Daryl
Reedus plays half of the Dixon brothers, the more reclusive bad-ass who will emerge this season as a new leader for the group. With the return of Michael Rooker's Merle Dixon, the two will face off at some point in season three. His credits include The Boondock Saints and its sequel.
Steven Yeun as Glenn
Yeun plays the former pizza delivery guy turned gofer Glenn, who last season via his relationship with Maggie, became a beacon of hope on the series. Prior to Walking Dead, his credits include episodes of Warehouse 13 and The Big Bang Theory.
Scott Wilson as Hershel
Wilson plays former farm owner Hershel, who this season finds himself out on the road after the fire claimed the Greene family property. The veteran actor's credits include CSI: Crime Scene Investigation, Dead Man Walking, In Cold Blood and Monster.
Sarah Wayne Callies as Lori
Callies plays the manipulative Lori, Rick's wife. After believing her husband to be dead, she had an affair with his best friend, Shane. Season three will explore Lori's subsequent pregnancy and how she handles Rick's role in Shane's death. Callies previously starred on Prison Break and Tarzan.
Lauren Cohan as Maggie
Cohan plays Maggie, the eldest of Hershel's two daughters and the outspoken girlfriend to Glenn. Her credits also include The Vampire Diaries and Chuck.
Michael Rooker as Merle
Rooker returns in season three as the loud-mouth Merle, Daryl's older brother who was last seen chained to an Atlanta rooftop. He emerges this year after cutting off his own hand and fashioning a handy killing device to protect himself. The character actor's credits include Cliffhanger, The Bone Collector and Jumper.
Danai Gurira as Michonne
Gurira plays comic book heroine Michonne, the katana sword-carrying hooded woman who saves Andrea from near certain death in the second season finale. This season, they've become each other's support. Her credits also include Treme.
Andrew Lincoln as Rick
Lincoln is the group's fearless leader who leads them into their new home inside the prison. This year, he'll be challenged by the living as well as the dead as he seeks to protect the group from other survivors, all while dealing with his own family drama. His credits also include Love Actually, Strike Back and Made in Dagenham.
IronE Singleton as T-Dog
Singleton plays T-Dog, who may have to deal with the ramifications of dropping the key that would have unlocked Merle's handcuffs. His credits also include episodes of Single Ladies, Detroit 1-8-7 and Franklin & Bash.
David Morrissey as The Governor
Morrissey will play the iconic comic book villian The Governor, making his debut in season three of the zombie drama. In the Robert Kirkman comics, he's a feared leader with a conscience who's interested in finding a cure for the outbreak.
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