Kieran Culkin Is ‘Game’ to Have Brother Macaulay and Siblings on ‘Succession’ (Exclusive)

ET’s Rachel Smith spoke with Kieran Culkin at the season 3 premiere for ‘Succession.’ The actor reveals he would be game for his brother, Macaulay Culkin, and his other siblings to make cameos in the series. Culkin also talks about how the showrunners originally wanted him to audition to play Greg Hirsch before landing the role of Roman Roy. ‘Succession’ premieres Oct. 17 on HBO.