Barry Keoghan (born 18 October 1992) is an Irish actor. He has appeared in the films Dunkirk; The Killing of a Sacred Deer, for which he won an Irish Film and Television Award for Best Supporting Actor and was nominated for the Independent Spirit Award for Best Supporting Male; and Calm with Horses, for which he was nominated for the BAFTA Award for Best Actor in a Supporting Role, and the RTÉ drama Love/Hate. He also played Druig in Eternals and the Joker in The Batman.
A cynical barbarian, a crippled torturer, and an arrogant nobleman are drawn into a brutal conflict where politics, magic, and war collide—forcing them to confront their pasts as an ancient threat rises to reshape the world.