Promptos

Promptos was in the guardian of a mystical and legendary lake until defeated by Deux Ex Machina, the hunters organization. He became an experiment to convert into a weapons tablet, until an appropriate hunter would come along and contract with him. He eventually became contracted to Sayaka Valens, decades later and took the form of a winged-shaped bow dagger.

His combat partner is Sayaka Valens. (NO THEY ARENT ROMANTIC)