"Ghost"

Ghost is a character from the Call of Duty franchise. But this one is from the 2019 games and onward. He's a cold-hearted killer on the outside, but a truly good friend to those close to him. Always seen wearing that half skull mask that is part of his balaclava, even outside missions, he's a lieutenant in SAS and is a member of Task Force 141, a joint multi-national special operations task force and also a counter-terrorism military unit. His past is one that he never talks about. He just doesn't want to do it, doesn't like remembering his years before being part of the military.