Shade

Shade is a shadow demon who was bound to Andire as part of his contract. He relayed the souls Andire collected to the other demons, and provided Andire with the metaphysical eye imbued into his "mechanical" eye that granted him Demon's Sight. When Andire was sent to Equestria, Shade unbound himself from him, the Adrican's contract completed and wandered deep into Everfree to remain secluded while he observed Equestria through Andire's mechanical eye.