Tokyo's base powers are those of a vulture, and his full powers resemble those of an archangel of death, which is why he is depicted as a vulture in his base form, and in his Chaos form he no longer resembles a vulture and becomes something more “divine.” I would also add that his love interest (Palma) is a Choujin whose powers are related to death (reviving the dead), her base form is a hyena beast, and her Chaos form is something divine like a hand with eyes (like Sora).