A person (usually some sort of weightlifter) who is an avid user of the performance enhancer Trenbolone, otherwise known simply as “Tren”.
Guy 1: Bro do you see that guy deadlifting 500 lbs? Didn’t he just start lifting like 2 months ago?
Guy 2: Yeah bro I saw that guy with a needle in his ass in the locker room earlier, total Tren goblin.
Guy 1: Yeah makes sense, explains why he’s gained 80 lbs in muscle and can hit everything every day.