Logan's children, whose trust she has yet to earn. She has a son, Amir, from her first marriage. She also has a daughter from a previous relationship. Nicholas Braun as Greg Hirsch, the bumbling and sweet yet opportunistic grandson of Logan Roy's brother, Ewan. Greg is unfamiliar with the rough terrain he must navigate to win Logan over, and finds himself indentured to Tom Wambsgans in his quest for a place at Waystar and with the family. Brian Cox as Logan Roy, the Dundee-born billionaire founder of media and entertainment conglomerate Waystar RoyCo. He is a brash leader whose primary focus is his company rather than his four children: Connor, from his first marriage, and Kendall, Roman and Siobhan, from his second marriage. He is married to Marcia, his third wife. Kieran Culkin as Roman Roy, half-brother to Connor and the middle child from Logan Roy's second marriage. Roman is immature, does not take responsibilities seriously and often finds himself lacking the common sense his father requires of him. This is likely because, as evidenced in many episodes, his father's abuse targeted him. He is frequently at odds with his older brother Kendall and sometimes his sister Shiv, with whom he often vies for power and their father's attention. Peter Friedman as Frank Vernon, COO and later vice-chairman of Waystar RoyCo, and longtime confidant of Logan Roy. Frank is a member of Logan's old guard, on whom Kendall frequently relies to help win back Logan's favor. He is Kendall's mentor and godfather, and is disliked by Roman. Natalie Gold as Rava Roy (season 1; recurring: seasons 3–4), Kendall's former wife and mother of his two children. Matthew Macfadyen as Tom Wambsgans, Shiv's fiancé and then her husband; a Waystar executive who is promoted from heading the amusement park and cruise division to running ATN, the company's global news outlet. He enjoys his proximity to the Roy family's power but is frequently dismissed by the family's inner circle. He ingratiates himself with those more powerful than he, but torments his hapless subordinate, Greg Hirsch. Alan Ruck as Connor Roy, the only child from Logan Roy's first marriage. Mostly removed from corporate affairs, he defers to his half-siblings on most firm-related matters and resides at a ranch in New Mexico with his younger girlfriend Willa. He is prone to delusions of grandeur and has an interest in politics from a young age.