Greek star Andrew J. West has signed on to recur in The Walking Dead, appearing in the second half of Season 4.

The actor is portraying a man named Gareth, who is said to be a "remix" of an unidentified character from Robert Kirkman's comic book. Gareth is said to have a big presence and will be a pivotal role in the last half of this current season.

The actor will be credited as a guest star for his Season 4 run, with the potential to be promoted to series regular in Season 5. Other new additions to the cast, such as Michael Cudlitz (Abraham), Josh McDermitt (Eugene) and Christian Serratos (Rosita) have similar deals in place, although it isn't known when exactly these characters will debut.

There are just two more episodes left in the first half of Season 4, "Dead Weight" on November 24 and "Too Far Gone" on December 1, before the show goes on hiatus until February.

Andrew J. West has previously appeared on shows such as Castle and Body of Proof.