The Roy family is so fucked up it's fascinating
The series, created by former Armando Iannucci collaborator Jesse Armstrong, focuses on the brood of one Logan Roy (Brian Cox), head of Waystar Royco, a conglomerate that looks something like News Corp or National Amusements, depending on whether you peg Logan as a Rupert Murdoch or Sumner Redstone type.
He's got four children, each delightfully dysfunctional in his or her own way. There's Kendall (Jeremy Strong), a recovering addict and the most serious of the bunch who at first seems like the apparent heir. He's joined by Roman (Kieran Culkin), the insecure youngest brother who shields himself by being an unrepentant asshole slacker who loves the sound of his own voice. Their sister is Siobhan (Sarah Snook), nicknamed Shiv, a wry political strategist with a boisterous Midwestern weirdo of a fiancée Tom Wambsgans (Matthew Macfadyen) who runs the amusement parks department of Waystar Royco. Then there's Connor (Alan Ruck), Logan's child from a couple of marriages ago, a weird hybrid of a crunchy granola environmentalist and a strident capitalist in denial about the fact that his girlfriend is an escort-slash-playwright who doesn’t really care all that much about him.
Cousin Greg (Nicholas Braun) is in some ways the real Anna Delvey of this situation, though he is actually related to the Roys -- his grandfather is Logan's brother. After an incident involving too much weed and vomiting through the eye hole of a Mickey Mouse-esque mascot suit in the pilot, Greg infiltrates the family inner circle with hopes of getting an office job. He is at first passively accepted (Logan accidentally calls him Craig when they re-meet), but ends up being Tom's confidant in possession of far too much information. Still, he’s a man of less refined tastes than the rest. See, for instance, his highly relatable love of California Pizza Kitchen and his revulsion at the French tradition of eating a tiny bird whole.