Ari Spyros, the loathsome former SEC investigator who slithered across the battlefield and wiggled his way into working for Axelrod.
Spyros was a bit player early in Billions—and, really, with only a handful of lines each episode, he’s still a bit player now. But where he operated before as a utility to be activated as a way to help move a plotline forward, he exists now, fully fleshed out and materialized, as a preening, extremely moisturized, pointy-faced birdman who is a threat to steal any scene he pirouettes his way into. It’s remarkable, really.