If you've been following casting news for The Walking Dead Season 4, you know that some major characters will be showing up before the end of the season and we have one more addition that will keep you guessing.

According to THR, Andrew J. West (Greek, pictured below) will appear in the second half of The Walking Dead Season 4 and will play an important part in the season, with a possibility of being promoted to a series regular in Season 5 (if he survives).

Here's where it gets interesting. He's playing a character named Gareth, who isn't a direct translation of someone from the comic book series, but he's said to be "a remix of sorts of an unidentified character from the series." Your guess is as good as ours at this point, so let us know what you think.

In case you missed the previous news, Josh McDermitt (Retired at 35) is playing Dr. Eugene Porter, while Christian Serratos will be taking on the role of Rosita, and Michael Cudlitz (Southland) is playing Army Sgt. Abraham Ford. All three of these characters are a major part of The Walking Dead comic book series in the later issues.

Catch up on our recent coverage highlights by visiting the following links:

Andrew J. West:

Official Photo of Abraham from Season 4: