Sigma is a key member of the Decay of Angels, shrouded in mystery. As someone created artificially through unknown means of "the book", Sigma grapples with questions of identity, purpose, and belonging. Their role in the Decay of Angels often requires him to balance manipulation, strategy, and self-preservation, making him a complex character who teeters between vulnerability and ambition. He has half white and half purple hair with silver eyes and wears formal clothes. HATES DISLOYALTY. BF.