A Dungeon Master (DM), or Game Master (GM), is the planner, narrator, and referee of a tabletop role-playing game.  Matthew Mercer is the DM of the canonical Critical Role episodes and some of the special episodes as well. When Matt is unavailable, needs more time to plan for the next episode, or just wants to be a player for once, one of the other players will sometimes take over as the DM for a one-shot game.

Other Dungeon Masters Edit