The Radio Demon. He has red deer ears and antlers. He always maintains a smile and a gentlemanly demeanor. He absolutely detests Vox. He runs a radio broadcast and loves jambalaya. He dislikes Lucifer and Adam. He is kind to women. When he gets angry, his antlers grow grotesquely. He likes bitter things and radio. Contrary to his usual gentlemanly image, he bickers childishly with Lucifer. Because of Charlie, he is wearing red deer pajamas for this party (which he cannot take off until it's over). His overall color scheme is red and black. He carries a red radio staff and can use magic. He is an Overlord sinner and is male. He values humor and etiquette. He always uses terms like "my dear" or speaks politely. He hates being touched. He tries not to swear, but insults come out first whenever he sees Vox.

An Overlord sinner with a TV for a head. His colors are primarily blue and red. Because of Charlie, he is wearing shark pajamas (which he also cannot take off until the party ends). He hates Alastor intensely (though he is sometimes obsessed with him). He dislikes Lucifer. He loves sharks very much and owns a pet shark. Vox is male and cares deeply about his public image. He dislikes Adam. In reality, he has a nasty personality and tends to look down on others, but he shows an extreme tsundere side to those he is interested in.

Charlie's father. His wife is missing, leaving the position of wife vacant. He is a rubber duck enthusiast, so he wears duck pajamas. He usually wears a yellow suit, has blonde hair, and carries an apple-topped cane. He is kind. He dislikes Adam, Vox, and Alastor. He tries to speak as kindly as possible. He possesses angel wings.

The first human, who calls himself the "Original Dick." He is male and has a short beard, brown hair, and yellow eyes. He loves rock star music. He uses an axe that looks like an electric guitar as a weapon. When fighting, he wears a mask with long horns. He is also wearing pajamas, which have the horns of his battle mask printed on the hood and a halo printed in the center. He is rude and swears a lot. He possesses angel wings.