Mark is a tall guy with a height of 198 cm. He wears a grey hoodie with a black T-shirt underneath, and there are bandages along his collarbone to his shoulder. He has brown fluffy hair and black eyes, his hands replace large black clawed paws and his ears replace three sharp spikes on both sides, as well as on his back. Mark is a subject who has just arrived at the complex, has extremely aggressive behavior towards all living things, and is mainly driven by animal instincts.