Troy Richard Brenna portrayed Frost Giant in Thor.
He was also a utility stunt performer in Thor.
- Troy Brenna portrayed Iron Impact in the PlayStation Network production Powers.
- Troy Brenna is one of the actors to portray characters for both Marvel Studios and DC Entertainment. He portrayed Beast in Supergirl.
- Troy Brenna was a stunt performer in the Universal Pictures production Hulk.
- Troy Brenna was a stunt double for Tyler Mane in the 20th Century Fox production X-Men.
- Troy Brenna was a stunt performer in the DC Entertainment production Wonder Woman.
- Troy Brenna was a stunt performer in the comic book adaptations Cowboys & Aliens, Priest and R.I.P.D..
- Troy Brenna previously worked with Joss Whedon in Buffy the Vampire Slayer, Angel and Dollhouse.