|"Yeah, I'm cuttin' through history class now!"
Matthew Charles Sanders (better known by his stage name M. Shadows) is a character in Call of Duty: Black Ops II and Call of Duty: Black Ops 4. He is the lead vocalist of Avenged Sevenfold. M. Shadows appears in Black Ops 4 as a part of Operation Apocalypse Z as a playable character for the Blackout mode.
He appears in the non-canonical post-credit scene. Along with Synyster Gates, M. Shadows meets with Raul Menendez and Frank Woods at the backstage before the concert. M. Shadows yells at Menendez and asks him what he's doing, while Menendez is responding that he's been practicing, Gates then hits him in the head and tells him that he shouldn't make many mistakes. M. Shadows greets Woods with a more friendly tone and asks him if he's ready to rock. He and fellow band member, Synyster Gates then performs the song Carry On, with 95-year-old Frank Woods playing drums and Raul Menendez playing guitar.