McCormick is a classically trained actor who is perhaps best known for playing the role of Agent Washington in the Rooster Teeth web series Red vs. Blue. His other Rooster Teeth related roles include the voice of the Camp Quartermaster in Camp Camp and Dr. Abrams in the Rooster Teeth live-action series Day 5. He has also appeared in several RT Shorts.
- McCormick also auditioned for the part of Roman Torchwick.
- McCormick had a small role on the television series Breaking Bad, as a meth addict in Season 2, Episode 10.
- McCormick is one of three members of Volume 1's cast (the others being Gray G. Haddock and William Orendorff) to have previously done voicework for anime, his only major role being Kurodou Akabane in the English dub of GetBackers.
- Since Volume 1, McCormick has gone on to voice the titular character in the anime series Back Arrow.