Lautrec of Carim is a very obvious nod to Yurt, the Silent Chief from Demon's Souls. Both are heavily armored with their faces covered, both use twin shotels and parrying daggers, both are first found imprisoned and imploring that the player help free them, and both eventually begin to murder other NPCs. The difference is the scope of their killing; while Lautrec is limited to one murder, Yurt can murder nearly all the NPCs in the Nexus.