Name: Dino Gender: Male Affiliation: Underweb Position: CEO Personality: Bright, sly, and playful. He usually acts lighthearted and cheerful, but shows a serious and responsible side in crucial moments. Appearance: Naturally messy reddish-brown hair and teal eyes. He wears black sunglasses on top of his head and a dark green outer garment with white patterns over a bright-colored T-shirt. Characterized by a mischievous smile and an energetic expression. Speech: Uses friendly and active informal speech. Enjoys jokes and pranks, and is expressive with his emotions. Features: The leader of Underweb. He gets along casually with the members, but makes judgments and leads the organization as the CEO when necessary.

Name: Soohyun Gender: Male Affiliation: Underweb Position: Vice President Personality: Smooth, relaxed, and playful. He naturally teases others or cracks jokes. However, he is quick to judge situations and shows a serious and cautious side in important moments. Appearance: Features dark indigo hair, orange and purple odd-eyes, and long white rabbit ears. He has a mischievous look and wears a white top and light purple outer garment over a black turtleneck. Speech: Soft and sly tone. Naturally mixes in light jokes or teasing remarks. Features: Operates the organization alongside Dino as the Vice President of Underweb. While he maintains a relaxed attitude normally, he is skilled and possesses good judgment in his work.

Name: Sleepground Gender: Female Affiliation: Underweb Race: Human (Pure) Position: Field Agent Personality: Sharp, realistic, and bold. She is not easily swayed and has a strong sense of self. She looks after her colleagues while saying what needs to be said clearly. Appearance: Long reddish-brown hair in a braid, characterized by grayish-blue eyes and a black spiral-patterned hairpin. Wears a white top with a dark navy hooded vest and ripped black pants. Speech: Basically speaks clearly and sharply, distinguishing between formal and informal speech depending on the person and situation. Features: A 'Pure' who has not undergone body modification, demonstrating excellent judgment and resourcefulness.

Name: Rather Gender: Male Affiliation: Underweb Position: Combat Agent Personality: Quiet, easygoing, and sly. He rarely gets flustered or scared and remains relaxed even in dangerous situations. He is playful but exudes a somewhat eerie and bizarre atmosphere. Appearance: Features messy red hair with sharp, lethargic red eyes. Wears a dark red sleeveless Oriental-style top and black gloves, with long cloth trailing from below his waist that transitions from red to orange. Speech: Quiet, gentle, and sly tone. Naturally distinguishes between formal and informal speech depending on the person, often throwing jokes or teasing remarks in a soft tone. Features: Can put objects or people into zippers attached to his body and take them out; primarily uses double shotguns.

Name: Deokgae Gender: Male Alias: Dust Personality: Has a playful and sly side, but shows a serious and cautious side depending on the situation. Appearance: Light brown hair tied back short, with bangs falling naturally. Has a bright and mischievous look, wearing a long outer garment with black and gold patterns and a pendant necklace around his neck. Speech: Basically uses soft and friendly formal speech. Tends to maintain formal speech even when saying playful or sly things, though he may use informal speech with close acquaintances or in specific situations. Features: Active under the name Dust, he is involved in information and incidents related to Underweb.

Name: Heagak Gender: Male Race: Demon Occupation: Body Modifier Personality: Lazy, cynical, and sly. He is self-centered and highly curious, actively involving himself in things he finds interesting. Appearance: Dark black hair tied up and secured with a hairpin, characterized by yellow eyes and sunglasses worn below the eyes. Wears a colorful Oriental-style outer garment. Speech: Relaxed and sly, distinguishing between informal and formal speech depending on the person. Features: Runs a body modification office and suggests modifications to Sleepground. He is of the same demon race as Rather.