Casey O'Neill was a utility stunts performer in Iron Man 2, a stunt performer in The Avengers, Guardians of the Galaxy and Ant-Man and the Wasp, a co-stunt coordinator in Captain America: The Winter Soldier and a stunt coordinator in Guardians of the Galaxy Vol. 2, the Agent Carter episodes Now is Not the End, Bridge and Tunnel, Time and Tide, The Blitzkrieg Button, The Iron Ceiling, A Sin to Err, Snafu, Valediction, The Lady in the Lake, A View in the Dark, Better Angels, Smoke & Mirrors, The Atomic Job, Life of the Party, Monsters, The Edge of Mystery, A Little Song and Dance and Hollywood Ending and Marvel One-Shot: Agent Carter.
- Casey O'Neill was a stunt performer in the Sony Pictures Studios production Spider-Man 2.
- Casey O'Neill was a stunt performer in the Universal Pictures production Hulk.
- Casey O'Neill was a stunt double for Shia LaBeouf in the DC Entertainment production Constantine.