Will Barrett is the professional alias of the American voice actor John DeMita, who is based in California and has an extensive career in anime dubbing. Born in New York, DeMita has worked under the Will Barrett name for a significant portion of his voice-over filmography, which includes numerous prominent anime series and films.

In the anime industry, Will Barrett is known for providing the English voices for a range of characters. His notable roles include Silverfang in the series One Punch Man, Kars in JoJo's Bizarre Adventure, and J. J. Sexton in Mobile Suit Gundam Thunderbolt: December Sky. He also voiced multiple characters in the series Reign: The Conqueror, taking on the roles of Alexander, Cleitus, and Hephaestion.

Barrett's career features recurring collaborations within the anime dubbing community. Many of his credited roles appear in productions from studios such as Bang Zoom! Entertainment, a common provider of English dubs for Japanese anime. Beyond the specific roles mentioned, his broader filmography includes parts in long-running series such as Naruto, where he voiced Dosu Kinuta and Hiashi Hyuga, as well as Hunter x Hunter, Bleach, Code Geass, and Mobile Suit Gundam: Iron-Blooded Orphans. His body of work demonstrates a consistent presence in the industry, often taking on supporting and guest roles across a wide variety of popular titles.