He was also a utility stunts performer in Captain America: Civil War.
He was also a stunt double for Sebastian Stan in Avengers: Endgame and Jon Bernthal in The Punisher episodes Roadhouse Blues, Fight or Flight, Trouble the Water, Scar Tissue, One-Eyed Jacks, Nakazat, One Bad Day, My Brother's Keeper, Flustercluck, The Dark Hearts of Men, The Abyss, Collision Course and The Whirlwind.
- Spencer Mulligan was a stunt performer in the Sony Pictures Studios production Venom.
- Spencer Mulligan was a stunt double for Blair Redford in the 20th Century Fox Television production The Gifted.
- Spencer Mulligan was a stunt double for David A. Gregory in the DC Entertainment production Constantine.
- Spencer Mulligan was a stunt performer in the production Watchmen.