Peter Claven Cullen Jr. was an utility stunts performer in Iron Man, Iron Man 2 and Captain America: The First Avenger, a stunt performer in The Avengers, Thor: The Dark World, Captain America: The Winter Soldier and the Agents of S.H.I.E.L.D. episodes The Magical Place and Watchdogs and a stunt coordinator in Avengers: Age of Ultron.
- Clay Cullen was a stunt performer in the 20th Century Fox production Logan.
- Clay Cullen portrayed Stone in the New Line Cinema production Blade: Trinity.
- Clay Cullen was a motorcycle stunts performer in the New Line Cinema production Blade II.
- Clay Cullen was a stunt performer in the DC Extended Universe production Man of Steel.
- Clay Cullen was a stunt performer and a stunt driver in the DC Extended Universe production Batman v Superman: Dawn of Justice.
- Clay Cullen was a stunt performer in the DC Entertainment productions Constantine and Green Lantern.
- Clay Cullen was a stunt performer in the comic book adaptation R.I.P.D..
- Clay Cullen previously worked with Joss Whedon in Angel, Firefly and Dollhouse.