Jesse Armstrong Creator, Executive Producer Nicholas Braun Greg Hirsch Actor Brian Cox Logan Roy Actor Kieran Culkin Roman Roy Actor Dagmara Domińczyk Karolina Actor Peter Friedman Frank Vernon Actor Justine Lupe Willa Ferreyra Actor Matthew Macfadyen Tom Actor Arian Moayed Stewy Hosseini Actor David Rasche Karl Muller Actor Alan Ruck Connor Roy Actor Alexander Skarsgård Actor J. Smith-Cameron Gerri Kellman Actor Sarah Snook Siobhan "Shiv" Roy Actor Fisher Stevens Hugo Baker Actor Jeremy Strong Kendall Roy Actor Hiam Abbass Marcia Roy Guest Star Natalie Gold Rava Roy Guest Star Juliana Canfield Jess Jordan Guest Star Scott Nicholson Colin Guest Star Zoe Winters Kerry Castellabate Guest Star Adam McKay Executive Producer Frank Rich Executive Producer Kevin J. Messick Executive Producer Will Ferrell Executive Producer Jane Tranter Executive Producer Mark Mylod Executive Producer Tony Roche Executive Producer Scott Ferguson Executive Producer