Ralf Earl Koch was a stunt rigger in Captain America: Civil War and Avengers: Infinity War, a stunt rigging coordinator in Thor: Ragnarok and Avengers: Endgame and a stunt performer in Spider-Man: Homecoming and the Agents of S.H.I.E.L.D. episodes The Inside Man and Parting Shot.
- Ralf Koch previously worked with Joss Whedon in Angel and Serenity.
- Ralf Koch was a stunt rigger in the 20th Century Fox production X-Men Origins: Wolverine.
- Ralf Koch was a stunt performer in the 20th Century Fox production The Wolverine.
- Ralf Koch was a stunt performer in the DC Entertainment productions Batman & Robin, Constantine and Jonah Hex.
- Ralf Koch was a stunt performer, a utility stunts performer, a stunt player and a stunt driver in the DC Entertainment production Watchmen.