It’s a zombie.

A zombie with a torn face and exposed teeth lunges forward in a dimly lit, ornate hallway, its arms outstretched toward a man in a red vest who turns to face it. The man, holding a firearm, stands in a doorway as the zombie advances, then the scene cuts to a woman in a green uniform looking down, followed by a shot of the man speaking to her in a room with wooden paneling and a large pillar.