Matthew Mercer

Matthew Christopher Miller, known professionally as Matthew Mercer or Matt Mercer, is an American voice actor, game designer, gamemaster and singer. He has been a voice-over artist in video games and animation since 2002.

Notable animation credits include Levi Ackerman in Attack on Titan, Kiritsugu Emiya in Fate/Zero, Jotaro Kujo in JoJo's Bizarre Adventure, Yamato in Naruto, Trafalgar Law in One Piece, Hit in Dragon Ball Super, and Leorio in Hunter x Hunter.

Mercer's video games credits include Leon S. Kennedy in Resident Evil 6, Kurtis Stryker in Mortal Kombat, Chrom in Fire Emblem, Jack Cooper in Titanfall 2, Cole Cassidy in Overwatch, Yusuke Kitagawa in Persona 5, Goro Majima in Like a Dragon, Ganondorf in The Legend of Zelda: Tears of the Kingdom, Espio the Chameleon in Sonic the Hedgehog, and Vincent Valentine in Final Fantasy VII Rebirth.

Mercer developed and served as the Dungeon Master for the Dungeons & Dragons web series Critical Role since it premiered in 2015. He is the chief creative officer of Critical Role Productions. As a game designer, he has worked on tabletop role-playing game books such as Explorer's Guide to Wildemount (2020), Tal'Dorei Campaign Setting Reborn (2022), Critical Role: Call of the Netherdeep (2022), and Daggerheart (2025).

Matthew Christopher Miller was born in Palm Beach Gardens, Florida. He is primarily of Scottish descent. His family moved to Los Angeles when he was eight years old. He attended Agoura High School in Agoura Hills, California. His father was a musician/audio engineer and his mother was an actress and writer. He has a brother who is a musician under the stage name Dave Heatwave. He spoke with a stutter when he was young, leading his father (who also stuttered) to recruit a speech therapist who managed to reduce the effects to the point that only certain words trigger it. He adopted "Mercer", which members of his family had used in the past, as his stage surname because his birth name was too similar to someone already represented by SAG-AFTRA. He had a stint as a member of The Groundlings.

Mercer's family advised him against moving into theatre as a career, and so he initially considered working in animation. He was dissuaded by advice from professional animators about the working conditions in that field however, and joined the games industry instead. In his early career he worked as a QA tester and later associate producer on a number of Edutainment titles developed by Sound Source Interactive and TDK Mediactive. After "friends of his father got him some odd jobs in voiceover", Mercer decided to pursue the profession, and resigned from his game development job.

Mercer began his voice acting career performing English walla and additional characters in several Japanese anime, and has since also worked in cartoons, video games, and radio commercials. He has been a guest at conventions around the world, hosting at events such as Anime Expo and Anime Matsuri. His work has expanded to a multitude of roles in cartoons, video games and radio commercials. He directed and produced the web series There Will Be Brawl, based on the Super Smash Bros. video game series, where he provided the voices for both Meta Knight and Kirby, and portrayed the role of Ganondorf. He also acted in several shows from the Geek & Sundry and Nerdist networks and produced the web series Fear News with the Last Girl for FEARnet which was a 2010 Webby Awards Honoree for the Experimental & Weird category.

In 2016, Mercer served as the Dungeon Master for Force Grey: Giant Hunters, which ran for 2 seasons. In 2017, he was the Dungeon Master for the Nerdist show CelebriD&D, which puts D&D-playing celebrities into a small, mini-campaign where they are paired with role-players. He has also been a player in other actual play web series such as Dimension 20 and L.A. by Night.