Peter Brett Cullen (born August 26, 1956, in Houston, Texas) is an American actor with more than a hundred film and television credits dating back to 1979. He is best known for playing Thomas Wayne, Bruce Wayne's father, in Joker (2019), as well as for roles in Friday Night Lights, Narcos, Person of Interest, Ghost Rider and The Dark Knight Rises.
In August 2025, it was announced that Cullen joined the cast of the series Y: Marshals, a spin-off of the Yellowstone series by Taylor Sheridan, in the role of Deputy Chief Marshal Harry Gifford.
At the end of October 2025, the action thriller Safe House premiered, in which Cullen plays a superior agent named Marshall.
In 2025, Cullen appeared in eleven episodes of the Netflix series Ransom Canyon as Samuel Kirkland.
For 2026, his further participation in the series Marshals and roles in the films Kill Code and The Pirate King are announced.
