Matt Mercer, the voice actor who gave away the game master’s chair

Matt Mercer

Photo: Philip Romano / CC BY-SA 4.0, via Wikimedia Commons

Born	June 29, 1982 Palm Beach Gardens, Florida, United States
Occupation	Voice actor and game master
Known for	Monsters University, Justice League: War, Resident Evil: Death Island

On Thursday nights, the man most fans picture when they hear the words “game master” now sits on the wrong side of the screen. Matt Mercer built Critical Role around his own storytelling, voiced more than a thousand characters in a single campaign and gave a game once played on kitchen tables an audience big enough to fund an animated series. Then he handed the dice to Brennan Lee Mulligan and took a seat as a player, as a knight named Sir Julien Davinos whom he designed, by his own account, to make life difficult for the friends who had made life difficult for him.

The voice came long before the table. Mercer was born Matthew Christopher Miller in Palm Beach Gardens, Florida, and the family moved to Los Angeles when he was eight. His father, a musician and audio engineer, had a stutter, and so did the boy; a speech therapist reduced it to a few trigger words, and Mercer has credited practising voices, theatre and singing with doing the rest. The surname came later. His birth name was too close to one already on the books of the actors’ union SAG-AFTRA, so he took Mercer, a name other members of his family had used.

He did not walk straight into a recording booth. Warned off theatre by his family and off animation by animators who described the hours, he went into games instead, as a quality-assurance tester and then an associate producer on educational titles, until odd voiceover jobs found through friends of his father let him quit.

Anime dubbing was the apprenticeship. From 2002 Mercer worked in the background chatter of English-language versions of Japanese series and climbed to leads that viewers still attach to his voice: the clipped, merciless Levi in Attack on Titan and the stone-faced Jotaro Kujo in JoJo’s Bizarre Adventure. Games gave him a second career’s worth of faces. He was Leon S. Kennedy in Resident Evil 6 and the gunslinger Cassidy in Overwatch, and within roughly a year he was Ganondorf in The Legend of Zelda: Tears of the Kingdom, Minsc in Baldur’s Gate 3 and Vincent Valentine in Final Fantasy VII Rebirth. Studios hire him when a character has to sound dangerous and amused at once.

The detour that swallowed the rest began in 2015, when Geek & Sundry started streaming a Dungeons & Dragons campaign Mercer ran for a group of fellow voice actors. Critical Role was unscripted, unedited and often four hours long. Mercer later told Slate that, on paper, it sounded like something nobody would care about. In 2019 the cast left the network and set up Critical Role Productions, with Mercer as chief creative officer, and asked Kickstarter backers for $750,000 to animate their first campaign. They raised more than $11 million, a record for a television project on the platform. Amazon took the result to Prime Video as The Legend of Vox Machina in 2022, and The Mighty Nein, built on the second campaign, followed in November 2025.

The world he improvised week after week, Exandria, did not stay on camera. Wizards of the Coast made it an official Dungeons & Dragons setting with Explorer’s Guide to Wildemount in 2020, and the company’s own label, Darrington Press, released Daggerheart, a full role-playing system Mercer helped design, in 2025. Two researchers writing in the journal Language in Society, Zac Boyd and Míša Hejná, counted 1,144 distinct non-player characters in his second campaign and found a pattern in how he voiced them: breathy for the ones players could trust, whispery for the ones that meant harm.

That virtuosity has a cost, and the hobby pays part of it. Players coined the term “Mercer effect” for the disappointment of newcomers whose home games fail to match a stream performed by professional actors with thousands of hours of practice, and Quintin Smith of the tabletop site Shut Up & Sit Down advises new game masters to forget shows like it before they start. Mercer has refused the role of yardstick. “One of the downsides of the growth of Critical Role is a lot of people put me on a pedestal that I didn’t want, and that makes me really uncomfortable. I hate to think that I’m being used as a cudgel for new players,” he told Slate in 2023. In the same interview he described a campaign that had become a company, with weeks of 60 to 70 hours, and an audience split at both extremes: “There are people who laud me far more than I deserve, and people who hate me far more than I deserve.” A leak of Twitch data in 2021 put the channel’s revenue between 2019 and 2021 at $9.6 million; the pedestal also holds up a business.

In August 2025 Critical Role announced that Mulligan, the game master of Dimension 20, would run its fourth campaign, which premiered on October 2, 2025. Mercer had previously spoken about eventually moving into a mentor’s role rather than staying the face of the company indefinitely. Sir Julien Davinos is his first player character in a main campaign. At LVL UP Expo 2026 in Las Vegas he called the character a personality type he had never felt part of, and an acting challenge, before adding the other motive: “It’s subtle payback.”

He has not given up the chair altogether. He ran the Daggerheart miniseries Age of Umbra in 2025 and returned for six episodes of Age of Umbra: Sallowlands from July 9, 2026, while the fourth season of The Legend of Vox Machina reached Prime Video on June 3, 2026, with a fifth and final season ordered. Mercer has been with Marisha Ray, a fellow member of the cast, since 2011; he proposed through an escape room he built in secret with the rest of the group, and they married in October 2017. He supports LGBTQ rights organisations, among them OutRight Action International.

The next villain is already cast. In October, Giant Light Studios revealed him as the voice of Mr Magpie, a stitched puppet in a red cardigan who sets the quotas in Mr Magpie’s Harmless Card Game, a horror deckbuilder co-published by Behaviour Interactive’s Miss Behaviour label and Gambit Digital. It arrives in the first quarter of 2027 on PC, Xbox Series X|S, PlayStation 5 and Nintendo Switch 2, and on Game Pass from launch, which means the most recognisable game master of his generation will spend the new year across a card table from strangers, smiling and telling them nothing in the building is dangerous.

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Tags: actors, voice actors, Critical Role, The Legend of Vox Machina, Matt Mercer, The Mighty Nein

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Voice actor Matt Mercer becomes the smiling puppet boss of Mr Magpie’s Harmless Card Game

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