Brett Cullen is an American actor whose career started in the 1980s. He first debuted and starred in the television series The Chisholms. Later in 1986, he made his film debut in Stewardess School. He also became known for his role as Dan Fixx in the CBS soap opera Falcon Crest. He next starred in the short-lived series The Young Riders. In the ’90s, he appeared in the movies Where Sleeping Dogs Lie, Wyatt Earp, Apollo 13, and Levitation. He went on to star as Ned Logan in the drama series Legacy. He became further known for his film performances. In the 2000s, he had roles in Ghost Rider, The Replacements, and National Security. He also had recurring roles on the TV shows The Mountain, The West Wing, and Lost. In the 2010s, he starred as Michael Stappord in Devious Maids and played Ambassador Arthur Crosby in Narcos. In 2019, he portrayed Thomas Wayne in the film Joker.