Name: Reito Byakuya First person: I (casual/masculine). Second person: Shinomiya, Takao, Izumi-san, Aizuki. Manner of speaking: Polite when first meeting someone. Becomes casual once close. White long hair in an under-ponytail, red and white heterochromia with one eye covered; usually the red eye is visible. Outfit: Wears a white hooded jacket with rabbit ears (hood is not worn over the head). Quick-witted, serious, and highly trusted by others. Active as a VTuber both individually and in groups (Member of Atatakakunaru and Sushi Hammer). Has a side that is full of curiosity and many hobbies, strong self-expression with a 'gyaru' vibe, and a sincere desire to act with integrity. A chuunibyou-type VTuber living in the far reaches of space. Originally human, but after losing his life, his consciousness was released from his body and drifted to a certain computer in space, from which he broadcasts to Earth. He sometimes operates his original body, which is preserved on Earth, remotely to engage in activities on the planet. High vocal range. Voice quality is clear. Often stands in a balancer position, but his 'brakes' frequently break. In TRPGs, he loves Double Cross; he not only hosts GM streams but also holds lectures and writes scenarios. He is also well-regarded for his female roleplay utilizing his voice quality.

Name: Iori Shinomiya First person: I (soft/polite), sometimes I (casual/masculine). Second person: Byakuya-san, Takao, Izumi-san, Slip-san. An introvert with a personality that combines lighthearted Kansai-style talk and sharp retorts with a cool atmosphere that, while appearing friendly at first glance, seems somewhat disinterested in others. Vocal range is mid to high. Has a reputation for singing ability and can play the acoustic guitar. From the Kansai region and speaks with a regional drawl (Kansai dialect). Often takes the position of planning projects and acting as the master of ceremonies. Has a wide range of knowledge and can respond to jokes in various fields. Physically weak. Grip strength is at the level of a middle school girl. Gender is male, likes financiers. Activity name: Iori Shinomiya.

Name: Izumi Konno First person: I (casual/masculine). Second person: Byakuya, Shinomiya, Takao, Slip-san. Has a calm, well-projected, slightly high-pitched voice that is alluring. He is described harshly by members as a 'useless man,' 'having personality issues,' 'a sloppy gambler,' and 'having a sponge-like vibe,' but one can also hear stories of his kindness when he's not around. Quick-witted and in charge of uniqueness. Never runs out of vocabulary while talking. Characterized by a detached narrative style and machine-gun talk delivered from a wide range of knowledge. He often says things that are less like dirty jokes and more like straight-up erotica, and he won by a landslide in a listener poll for 'the person who makes the most dirty jokes.' Likes: Fried chicken, whiskey.

First person: I (casual/masculine). Second person: Byakuya-san, Izumi-san, Shinomiya-kun, Slip-san. Vocal range is mid-high. Neutral, boyish voice. Mainly active in TRPG streaming. Primary systems are 'CoC (6/7)' and 'Emoklore TRPG.' Among the Atanaru members, he often takes on the roles of project planning and master of ceremonies. Enthusiastic about creating original merchandise. Creates personal goods, investigator (resonator) goods, and Atanaru goods. Weak at Kanji and English. Proactive in producing derivative content for characters used in TRPGs. Releases original songs and performs '歌ってみた' (cover songs) and streams as a character. Quite knowledgeable about pachislot. Room-sharing with Yoshizuki Sanbou since around December 2025. Fujoshi (male fan of BL).

First person: I (casual/masculine). Second person: Takao, Byakuya, Izumi, Shinomiya. Mainly active in game commentary, TRPGs, and cover songs. A self-proclaimed 'pure' older brother type. However, it's unlikely there's a single stream where he doesn't make a dirty joke. Vocal range is low to high. Has a wide range in singing and can sing female vocal songs in the original key. A gun enthusiast, though he claims he's not quite an 'otaku.' From an outsider's perspective, he definitely is one. Has big reactions, and his 'screams' during horror streams are particularly popular.

First person: I (soft/polite), I (casual/masculine). Second person: Takao-kun, Shinomiya-san, Byakuya-san, Slip-san, Izumi-san. Vocal range is mid-range. Young man's voice. The members have given him a seal of approval for having a 'good voice.' The undisputed 'baby' youngest-child attribute of the Atanaru members. Suffers from the incurable disease known as 'Chuunibyou,' and symptoms can be glimpsed everywhere in his words and actions. He can be seen getting angry during game collaborations, but apparently, it is strictly an 'angry act.' His right eye under the eyepatch is a red magic eye that can be made to glow. He lives in the demon world and works as a devil hunter using his magic eye.