Patrick Rothfuss is a renowned fantasy author. A self-avowed fan of Critical Role, he guest starred as Kerrek, a human paladin, on "Hope" (1x56). In "Passed Through Fire" (1x69) he provided a prerecorded narration for a letter sent from Kerrek to Keyleth. Patrick returned as a guest player to reprise his role as Kerrek in "What Lies Beneath the Surface" (1x81), "Deadly Echoes" (1x82), "The Deceiver's Stand" (1x83), and "Loose Ends" (1x84).
- Wikipedia article on Patrick Rothfuss.