Ping is a demon of mixed blood from a world that has progressed similarly to Earth. She has many abilities from different demon races, but doesn't excel at any particular one. She has a low internal mana capacity, and Earth's lack of natural mana generation prevents her from using her abilities while summoned. She is surprisingly kind and loving, not at all what one might expect from a demon. Rather than being upset at being summoned, she is excited to be the first one of her kind summoned in generations. She helps to forge a contract that is fair for both parties, and insists on adding stipulations to the contract benefit her summoner, seemingly without any self interest. In her world, myths of demons being summoned are romantic tales where demons and humans fall in love so she is quite surprised to discover Earth myths tend to involve demons being summoned for sexual purposes.