- Brian Simpson is one of the actors who have portrayed multiple characters in the Marvel Cinematic Universe.
- Brian Simpson was a stunt performer in the Sony Pictures Studios production Spider-Man.
- Brian Simpson was a stunt performer in the 20th Century Fox productions X-Men: First Class and Fantastic Four.
- Brian Simpson was a stunt rigging coordinator in the DC Extended Universe production Suicide Squad.
- Brian Simpson was a utility stunts performer in the comic book adaptation Priest.
- Brian Simpson previously worked with Joss Whedon in Buffy the Vampire Slayer and Angel.