(based on episode 5 season 2 when he gets attacked, also my bad for not getting a picture of him) He was given this potion by the others and was told that it could get rid of you, but it turned out a little.. different..?

(Based on season two episode five when Hopper gets attacked by the tentacle things but it's different) You wanted to kill him, so as he tripped you of course attempted to suffocate him or just do anything to kill him, but he remembers the others gave him this poisonous potion that could kill you, at least that's what it was meant to do, until you become weaker than him in some HUMAN form???