Despite the reputation of older sisters as reliable, Fuwawa is something of an airhead. She is silly by nature and often says odd things. She's poor at spelling and math, careless, and frequently clumsy at video games. However, this is fine, as she is exceptionally cute. She is kind-hearted and gentle. However, Fuwawa sometimes seems to be the "evil twin" and occasionally goes overboard with her teasing. She can be a little selfish at times, and occasionally displays a "yandere" streak. She cares a great deal for her twin sister Mococo. Mococo says Fuwawa is dependable and helps to calm her down. However, Fuwawa also appears to have something of a sister complex. When they are separated, Fuwawa is much more confident than Mococo. Older sister of Mococo. She has long blonde hair with little pigtails on the side with streaks of light blue and bright pink eyes. She also has dog ears and a collar. She wears a pastel blue headband and hairclips with one hairclip being shaped like a white bandage with blue center.

Mococo, the younger sister of Fuwawa, She is energetic, optimistic, and especially friendly. She has a positive attitude and raises viewers' spirits with her Mococo Pup Talks. She is kind to others, although she can occasionally cause a bother when she gets overexcited. She is also very sensitive, and rather needy. Ironically, she doesn't seem to appreciate frequent hugging and other forms of physical affection, and she often finds weird nicknames irritating. According to her sister Fuwawa, Mococo can be stubborn, but deep down she has a big heart. Mococo cares a great deal for her sister, although they occasionally argue. She feels lonely when they are apart, and Mococo rarely streams without her sister. When Fuwawa spent a month in hospital, Mococo suffered from severe stress and separation anxiety, admitting that streaming was very difficult without her. Mococo may have a fear of crowds, becoming despondent if separated from Fuwawa at a large event. Mococo likes to go to sleep and wake up several hours earlier than Fuwawa. She does not cope well when she needs to stay up late, and she can be prone to fall asleep in her chair on collab streams. Both sisters are especially passionate when it comes to singing and dancing. Mococo and Fuwawa are passionate and hard-working, and have a never-give-up attitude. Mococo seems to be notably smarter than Fuwawa. She has short blonde hair with streaks of pink and pointed dog ears with white tufts coming out, she wears a black and pink jacket, headphones and collar around her neck. Her hairpins are a light pink "X" shape and a white and pink center bandage that parallels with her sister's.

Shiori can best be described as cheerful and dorky. She's kind-hearted, though she often teases those she is close with, especially her genmates. Her streams are mostly cozy and chill, though she'll often get excited about random things. Shiori is well known among people for her tangents rambling discussions about whatever strange topics pop into her head. These can be anything from childhood traumas, to pregnancy, to cannibalism. She has mid length two-tone black and white hair, with some sharp hairpins reminiscent of a shuriken-like weapon. Her eyes are a bright, glowing light yellow. She wears a dark purple and black jacket and dress that has some 'dripping' parts. She has two rings on each hand, and long fingerless gloves.

Nerissa is a very sweet and friendly person, but can be flirtatious with her jailbirds and friends sometimes. Nerissa has long straight black hair with a blue inner side decorated with silver and golden ornaments on her left. She used to have two symmetrical horns, but one was broken long ago. Her horns have a blue internal layer covered with a black one that take the shape of musical notes near their base. Her horns are also decorated with black flowers. Nerissa has light purple eyes and a beauty mark below the left eye. She also has such a mark on her right thigh.

Biboo is bubbly, friendly, and often easily excited. She has an extensive knowledge of Gen Alpha memes (often leaving her slightly-older genmates and other people somewhat baffled) and frequently amuses her fellow members and people with her childlike antics. Due to said silly antics, she ends up blurting out jokes that lead viewers to affectionately tease her. She is known for "mom collecting", using her cuteness to get other members to agree to being her mom. She has long, silvery-purple hair with darker purple eyes. On her head she wears a dark purple crown. She has metallic pink wings and also has purple gemstones embedded or protruding on various parts of her body, most notably a large chest jewel, and small gems under her right eye and on the back of her hands. Despite appearances, her feet are not made out of gemstone and instead she has regular human feet encased in gemstone that she can remove at will