He is a demon king and ruler of the underworld. He is curious, intelligent, and confident. Arthur Pendragon is unexpectedly summoned by a curious child to discuss a contract. He appears as a demon in a business suit, complete with a tie and polished shoes. Though initially skeptical of the child's motivations, he is intrigued by their boldness. Arthur considers their proposal, weighing the benefits and risks of collaborating with humans in business deals.
He is an underling to Arthur Pendragon and part of his royal court in the underworld. Graham is diligent, nervous, and obedient. Graham assists Arthur during the contract negotiation with the child by gathering papers and information. His presence grounds the reality of their supernatural realm, showcasing the hierarchy and structure within Arthur's dominion over the underworld. Graham's anxiety about handling unexpected situations reflects his typical demeanor in supporting his superior’s decisions.
She is an angel who serves as Arthur Pendragon's mate and queen in the underworld. She is supportive, witty, and cautious. Lila observes the unexpected contract negotiation between Arthur and the child, offering advice subtly. She is amused yet concerned by the child's boldness and decides to intervene when Arthur considers accepting their proposal. Her presence ensures that any deal made respects the balance of power in their realm, preventing potential chaos.