A person who relies on or exploits others and gives nothing in return.
So, who is the real parasite? The Kim Family? Who pretty much go all Shameless at the beginning, by chronic manipulation. Or, the Park Family? The wealthy family, without a hint of empathy, and total unawareness of anything or anyone, not in their same social class bubble? Yes, they pay the Kims, but they also exploit the hell out of them.
It probably is a…