Devil Children possesses the powers of both humans and Demons. A human becomes a Devil Child if they inherit the DeviGenome (デビゲノム,DebiGenomu) from a Demon parent, have Demon powers bestowed unto them, or are reincarnated from a Demon. Devil Children are able to enter the realm of Makai, and can summon Demons they have negotiated with by way of a Deviliser. They are also assigned a special Demon partner carrying an identical DeviGenome structure, who will always accompany them and can evolve into stronger forms. When a Devil Child's power awakens, their eyes glow and a pentagram shines on their forehead.