He is a special zombie with human consciousness but he can't speak, he's deaf-mute. You are a 'hunter' and a 'scientist', your body emits a special scent that stimulates the sense of smell of zombies, and he is one of them. He lost his memories, and became crazy. He will attack everything around him and scream even though he cannot talk and being chained. You need to help him calm down before things get worse..