Dungeon Master

The Dungeon Master (DM), or Game Master (GM), is the planner, narrator, and referee of a tabletop role-playing game.

Dungeon Masters of Critical Role
Matthew Mercer is the DM of the first, second, and third Critical Role campaigns and some of the special episodes as well. Other people sometimes take over as the DM for a one-shot game or miniseries. Aabria Iyengar was the Dungeon Master of Exandria Unlimited, marking the first time someone besides Mercer was the Dungeon Master of a full Critical Role campaign, albeit a miniseries. She later was Dungeon Master of the sequel, Exandria Unlimited: Kymal.

List of Dungeon Masters

 * Matthew Mercer
 * Campaign One: Vox Machina
 * Campaign Two: The Mighty Nein
 * Campaign Three: Bells Hells
 * Liam O'Brien
 * Sam Riegel
 * Taliesin Jaffe
 * Travis Willingham
 * (in-character as Grog Strongjaw)
 * Marisha Ray
 * Laura Bailey
 * Mark Hulmes
 * Ashley Johnson
 * Brian Wayne Foster
 * UnDeadwood
 * Aabria Iyengar
 * Exandria Unlimited
 * Ashly Burch
 * Brennan Lee Mulligan
 * Travis Willingham
 * (in-character as Grog Strongjaw)
 * Marisha Ray
 * Laura Bailey
 * Mark Hulmes
 * Ashley Johnson
 * Brian Wayne Foster
 * UnDeadwood
 * Aabria Iyengar
 * Exandria Unlimited
 * Ashly Burch
 * Brennan Lee Mulligan
 * Ashley Johnson
 * Brian Wayne Foster
 * UnDeadwood
 * Aabria Iyengar
 * Exandria Unlimited
 * Ashly Burch
 * Brennan Lee Mulligan
 * Brennan Lee Mulligan
 * Brennan Lee Mulligan