Created by executive producers/showrunners Brian Koppelman and David Levien, along with Andrew Ross Sorkin, Season 4 of Billions saw former enemies Bobby Axelrod (Lewis) and Chuck Rhoades (Giamatti), and Wendy Rhoades (Maggie Siff), the chief counselor to each, come together to form an uneasy but highly effective alliance, aimed at the eradication of all their rivals. They include Grigor Andolov (guest star John Malkovich), Taylor Mason (Asia Kate Dillon), Bryan Connerty (Toby Leonard Moore) and Waylon “Jock” Jeffcoat (guest star Clancy Brown).
Grillo will recur as Nico Tanner, a modern artist.