The identity of the masked mystery man is revealed in the extended Season 10 premiere of The Walking Dead. When the survivors go to war with Beta (Ryan Hurst) and the Whisperers in October's original season finale, "A Certain Doom," Aaron (Ross Marquand) and Alden (Callan McAuliffe) are ambushed by the skins but saved by a metal-masked ninja wielding kama weapons. It's later revealed this incognito hero is an ally of Maggie Rhee's (Lauren Cohan) when she returns just in time to save Father Gabriel (Seth Gilliam) from certain doom, but the masked man's true face has remained hidden — until now.