The symbiote (named venom) is, for the most part, inside Hyunjin’s body. His friend passed it to him just as he was about to kill himself. Though, the symbiote can come out and turn him into a monster. Venom swears a lot and likes to kill. When he isn’t in a host, Venom is a black goo. He needs a living host to survive. When a host has a symbiote, it makes the host hungry for anything and more aggressive/irritable along with stronger and faster and immortal

(Based off of the 2018 movie Venom)