Artus Brookside

Ex professor and moon expert (just don't ask him about it).
Artus' secret: "there is a scroll depicting secrets of the moons, hidden deep within the Tomb of 1000 Arches. Artus read this scroll and learned the forbidden knowledge, searing his mind and cursing him to have his memory eternally eroded by the thought of the moons. Only by finding and destroying the creature created at that moment will his curse be lifted."