Big Hat Logan is the great sorcerer of the Vinheim Dragon School, Griggs of Vinheim's mentor, and a magic trainer of sorcery in Dark Souls. He is first encountered in Sen's Fortress, where he is imprisoned, and moves to Firelink Shrine once released. After purchasing all of his items, Logan moves to The Duke's Archives, where he sells new spells and eventually goes hollow.
Leaving the Dragon School to search for the Regal Archives, which houses the knowledge of the Father of Sorcery, his obsession with Seath's knowledge eventually leads to his downfall.
