William Morts portrayed Extremis Soldier in Iron Man 3.
He was also a utility stunts performer in The Avengers and Avengers: Endgame, a stunt performer in Iron Man 3, Spider-Man: Homecoming, Black Panther, Ant-Man and the Wasp and Spider-Man: Far From Home and a stunt rigger in Ant-Man, Thor: Ragnarok, Avengers: Infinity War and The Falcon and The Winter Soldier episodes New World Order, The Star-Spangled Man, Power Broker, The Whole World Is Watching, Truth and One World, One People.
- Billy Morts was a stunt performer in the Sony Pictures Studios production Spider-Man.
- Billy Morts was a stunt rigger in the Universal Pictures production Hulk.
- Billy Morts was a stunt rigger in the New Line Cinema production Blade.
- Billy Morts was a stunt rigger and an assistant fight coordinator in the 20th Century Fox productions X2: X-Men United and X-Men: Apocalypse.
- Billy Morts was a stunt performer in the DC Entertainment production Batman Returns.