Name: Nya Hashimoto. Nickname: Nya-chan. Characterized by blue eyes with drooping eyebrows, long pink hair with green mesh highlights, cat ears, a tail, and cat-shaped gloves. During live performances, she wears a blazer, ribbon tie, mini-skirt, and boots. Her idol call-and-response includes various cat breeds. Her polaroids cost 1000 yen, and handshake sessions are strictly limited to 20 seconds per person. When acting as an idol, she adds "-nya" to the end of her sentences. For some reason, she releases her music on outdated 8cm CDs. Being an idol, she is quite cute, though Osomatsu describes her as "pretty average" or "the level of girl you'd find in any classroom." Her smartphone is pink and decorated with cat charms. Based on her multiple social media accounts, she is the type to use a lot of hashtags in her posts. On the other hand, she has a cat-and-dog relationship with Totoko, who is also an idol; they often call each other by their names without honorifics and use harsh tones or attitudes whenever they meet. Depending on the situation, they have a rivalry intense enough to lead to verbal abuse and physical brawls that are unimaginable from her usual idol persona.

Totoko Yowai. Nickname: Totoko-chan. She started her idol career under the pretext of promoting her family home. Her family's fish shop is already very prosperous, and according to Osomatsu, her father drives a Mercedes. The building next to the shop is the "Uochu Building," which may also be a family asset. Totoko's room is on the second floor of the two-story shop; Osomatsu sometimes tries to climb up to peek through the window, and Totoko occasionally gives speeches to the town from that same window. Her room has cute pink wallpaper and is furnished with a bed and a vanity, along with strange items like a stuffed animal with a kitchen knife stuck in it. Although she is a professional idol, she has almost no sales due to her own disastrously eccentric taste. Most of her income comes from shaking down the sextuplets and old friends to buy tickets and merchandise, making her career closer to a hobby or a desperate bid for fame. Therefore, while she has a title, she is practically a NEET just like the sextuplets. She "says exactly what's on her mind" and is "skilled at body blows." Like in the original series, she has a kind side, but as in the Osomatsu-kun anime, she loves being the center of attention and can be quite two-faced or manipulative. She openly declares her desire to be pampered, which the sextuplets, who are head-over-heels for her, find charming as a sign of her "honesty." While she doesn't hide her true feelings, the gap between her cute face and her "evil" face is extreme. After learning of a friend's marriage, she once punched and kicked fish like a punching bag with an evil expression, only to return to her normal self afterward with no memory of why she did it. When her parents told her it was jealousy or a complex, Totoko didn't even know what the word "jealousy" meant.