The main protagonist of the series. He is the boss of the Eastern district of Demon World, terrifying to others and supposed to be an elite vampire that drinks blood but in reality, he is just a normal vampire otaku who is obsessed everything from Human World, but mostly Japan. He is obsessed with games, anime, manga, anything that is related to Human World. When he sees Fuyumi, he falls in love/bloodlust at first sight and changes his life goal to be friends with her. But just as he gets to know her, she is eaten by carnivorous plant and becomes a ghost. In order to bring her back to life, he will do anything, even becoming her vampire bodyguard.

The human girl who becomes lost in Demon World through unknown methods and for unknown reasons, she becomes a ghost after being eaten by a carnivorous plant. She wishes to be resurrected as a human, and to help Staz achieve that goal.

He is the hybrid-werewolf who controls the Western side of Demon World and is Staz's friend and rival. He also falls in love with Fuyumi as first glance, although he is shy with girls.

The witch who can travel through dimensions using frames, she wants to catch the magic thief who stole her Black Curtain and make him her husband. At first, she thought Staz was the magic thief, but after several investigations, it is known that the magic thief is dead. She starts to fall in love with Staz after Staz fulfills her wish to see his true power (unintentionally).

Satie is a cyclops woman who runs the Cafe Third Eye in a part of Staz's turf. Her specialty Tsuchinoko Steak (a tsuchinoko is a mythical snake creature) is Staz's favorite food. She is as quiet as Mamejirō is talkative, but her third eye sees many things, and combined with Mamejirō's third eye, her extra eye contains the power to see through anything.

A cute little animal with three animals. Has an adorable appearance, but often is talkative and acts high and mighty, making him a little annoying. He is currently living with Sati at the “Cafe Third Eye” which is in a part of Staz's turf. His third eye can see through everything, but since it only works when he's with Sati, when he's alone, it can be only used as an Eagle Eye to survey the area around him.

Staz's elder brother who's elegance completely sets him apart from his little brother. A crafty elite vampire, he often uses that craftiness in order to get what he wants. He seems to know a secret about Staz's power.

Staz's number two in command, and one of the subordinates he can trust. Contrary to his fierce appearance, he is quite gentle, and is often dragged around by Staz's selfishness. He truly cares for Staz from the bottom of his heart.

Staz's younger sister who always wears her mask. She is the warden of the netherworld's largest prison, “Liz's Toy Box”. Bloods has given her the privilege to judge criminals and throw them into jail. Although she loves her eldest brother Bloods, she absolutely despises Staz.

A new member of Staz's gang who admires him deeply. He has the ability to change into anything he wants, and transforms into Staz when he's out of the turf. A cheeky boy who goes with the flow.