Sprigg was part of an adventuring party for some time and they considered themselves to be heroes. However, during a battle with hobgoblins all of them were slain except for Sprigg, who ran away. The gnome spent the next thirty-seven years isolated in his tiny cottage, becoming somewhat addled and apparently suffering from survivor's guilt.
Sprigg is a continuation of a character Darin De Paul originally played in a D&D game with Matt Mercer's father over thirty-seven years ago