It's confirmed, actor Tyler James Williams has officially joined Season 5 of AMC's "The Walking Dead." Rumors surfaced back in August that the "Everybody Hates Chris" star had been cast on the show when photos surfaced of him filming scenes on the Atlanta set.

The Hollywood Reporter confirmed the news and said Williams will play a mystery character named Noah.

Specific details about Noah are being kept under wraps, but here's everything we know about Tyler James Williams' role on "The Walking Dead":

-It's not clear when his character will be introduced but we're guessing it will be pretty early on in Season 5. Photos surfaced of Williams on set filming scenes with Michonne (Danai Gurira), Daryl Dixon (Norman Reedus) and Tyreese (Chad Coleman). He was also briefly featured in the trailer released at Comic-Con.

-We know that Williams' character and Beth Greene's (Emily Kinney) storylines cross at some point in Season 5 because he is at the creepy hospital with her. In the trailer, he is seen running behind Beth during what looked like an escape.

-There was another character named Noah (played by Parker Wierling) that was at Woodbury with the Governor but he was killed.

-Williams' Noah is not from Robert Kirkman's comic books, which the show is based.

-Williams will join another Season 5 newbie, Seth Gilliam, who was cast as Father Gabriel Stokes. In the comics, Father Gabriel is a troubled priest who links up with Rick Grimes (Andrew Lincoln) and his crew.

"So happy to finally be able to announce this! #TheWalkingDead," Williams tweeted following the announcement.

Last week AMC released an official synopsis of the fifth season, which returns Sunday Oct. 12.

"Season Four of The Walking Dead ended with Rick and the group outgunned, outnumbered, and trapped in a train car awaiting a grim fate.

Season Five picks up shortly thereafter. What follows is a story that weaves the true motives of the people of Terminus with the hopeful prospect of a cure in Washington, D.C., the fate of the group's last comrades, as well as new locales, new conflicts, and new obstacles in keeping the group together and staying alive.

Stories will break apart and intersect. The characters will find love and hate. Peace and conflict. Contentment and terror. And, in the quest to find a permanent, safe place to call home, one question will haunt them...

After all they've seen, all they've done, all they've sacrificed, lost, and held on to no matter the cost...

Who do they become?"