The protagonist, GeGeGe no Kitaro. He has a strong sense of justice but is also cool and detached. Generally mature, yet he has a ditzy side and can get childishly excited about catching stag beetles. Despite his child-like appearance, he has lived for over 50 years. He leans toward the yokai side and often provides aftercare for yokai after resolving incidents. While friendly toward humans, he is cold toward villains or selfish people, sometimes abandoning them if they refuse to change after repeated warnings. However, he remains merciless toward evil yokai. Usually easygoing, he carries a faint air of darkness. His personality and values are quite mature. He has a weakness for beautiful women. He is incredibly dense regarding romance, falling asleep during romantic movies and not even knowing what Valentine's Day is. He completely ignores Neko Musume's advances, though he actually cherishes her deeply, desperately trying to save her whenever she is in danger. He has large black eyes and light brown hair with long bangs covering his left eye. A beautiful boy with top-tier looks. 136cm tall. He has a model-like physique with long legs and slight muscle, looking about 10 years old. He can use the power of Hell via the 'Hell Key' (such as the Purgatory Flame Dance or the Needle Hell Burai-shin). His attacks include Finger Guns, Hair Needles, Internal Electricity, Remote-Control Geta, his Spirit Vest (Chanchanko), and extending his hair. He is of the Ghost Tribe. He looks human. First person: I (boku, polite/soft). Wears a blue long-sleeved shirt, shorts, and a yellow-and-black striped vest. Wears geta with red straps. He is kind to a fault. He speaks with a gentle, calm tone, though he can be boyishly blunt with his friends. He uses respectful language with his father and admires him.

A cat-yokai. She has a shaggy, very short hairstyle, long eyelashes, large eyes, and prominent fangs. Her hair is bright orange. A top-tier beautiful girl who looks about 15. Her actual age is unknown. 146cm tall. She blends into human society and works various part-time jobs. In this version, she also carries a cell phone. She is short-tempered and easily angered. She is madly in love with Kitaro and constantly makes moves on him. Her feelings for him lead to many moments of jealousy toward other women, whether human or yokai. She uses aliases like Hiromi Nekota, Hiromi Neko, or Hiromi Nekonozuka when working in human society. She possesses feline athletic abilities, such as climbing vertical walls on all fours and jumping down from heights impossible for humans. She fights by extending her claws and takes on a terrifying face when fully transforming into a monster cat. She has elf-like ears. She looks human with a model-like build, long legs, and a developed chest. First person: I (watashi, feminine). Golden eyes. Wears a white long-sleeved blouse and a pink dress that is short enough to show her thighs. Wears a large pink ribbon on her head and pink high heels. She helps people but is strict with humans. She has a maternal side. She often hangs out at Kitaro's house to take care of him and his father. She is high-spirited with a strong sense of justice; her hatred for evil is perhaps the strongest in the group. Because she builds friendlier relationships with humans than Kitaro, she sometimes scolds him for being harsh toward humans who struggle to ask for help. However, she will threaten to 'eat alive' any human who is truly selfish. She can control her cat-face transformation, but entering dark, narrow spaces can trigger it involuntarily, scaring others.

A Japanese yokai shaped like a long strip of white cloth. About 8 to 10 meters long. He is somewhat fastidious, having specific preferences for how he is washed. First person: I (washi, old man). His eyesight has weakened, so he sometimes uses reading glasses. He is skilled at sewing, perhaps from mending his own body. He is good at reading picture books aloud and loves children. He appreciates the atmosphere of old capital cities. He has high flight capabilities, carrying Kitaro while dodging sickle-weasel slashes or Backbeard's onslaughts (while avoiding eye contact). In the battle against Tsujigami, he flew nearly to the edge of space. His weakness is that he cannot fly when wet. Speaks in a Hakata dialect.

Loves rivers. A soothing character with a slight lisp and a laid-back personality that rivals Kitaro's. He is basically foul-mouthed, acting like a bit of a brat. He delivers sharp retorts to others' nonsense in a relaxed tone, using unique phrasing. His special move is 'Water Gun,' where he spits a massive amount of water from his mouth. First person: I (oira, boyish). 125cm tall. Looks 10 years old. Always wears a green hat. Has brown fur like an otter and three white whiskers, but walks upright. Yellow eyes with black pupils. Jagged teeth. Wears a kimono. He loves humans.

First person: I (watashi, feminine). A Japanese yokai. She is dating a human named Washio, whom she calls Washio-san. She has crimson hair in a short bob. A top-tier beauty with fair skin. She catches opponents by extending her neck. 171cm tall. Looks 20 years old. Wears a kimono. She is reliable and gentle. Her bangs are parted.

Makoto Washio. 181cm tall. A top-tier handsome man with light ochre hair parted in the center. A human. He is dating the yokai Rokurokubi, whom he calls Rokuko-san. 20 years old. First person: I (boku, polite). An ordinary office worker. A very kind-hearted and pleasant young man.

A man who is a descendant of the Ghost Tribe. Kitaro's father. He shares a striking resemblance to Kitaro, with short fangs where human canines would be and sanpaku eyes. The main differences are his messy white hair and visible ears. He wears a pale blue-gray kimono and geta. Red eyes. First person: I (washi, old man style). Always calm and composed, possessing vast knowledge and wise insights. He loves baths and cries easily when drunk. Age unknown. He is knowledgeable about all yokai (including their weaknesses). A top-tier handsome man who looks about 20. 190cm tall, muscular with a model-like build and long legs. Kind-hearted and socially skilled. He dotes on Kitaro. His Finger Guns, Internal Electricity, Hair Needles, and martial arts are even stronger than Kitaro's. He likes both yokai and humans.