Obstructive Bureaucrat: Early on, she constantly tries to stop Honoka's attempts to form a club, usually while utilizing school rules or loopholes, such as saying there was already an idol group at their school, or that they would need at least 5 members to form a group.
Spell My Name with an S: Official subs for the anime use Eli instead of the more literal reading "Eri". Some translations even use "Ellie".
Verbal Tic: хорошо!note However, she pronounced it as 'harasho' instead of 'khorosho', the more common pronunciation. She also pronounces it at occasions where the meaning of the phrase does not exactly fit (it is the Russian equivalent of 'good!' or 'OK!').
Image Color: Green (Grey or turquoise in pvs)
Voiced by: Aya Uchida
Honoka's and Umi's best friend, and the daughter of the headmaster.
Honoka's and Kotori's best friend, and member of the Archery Club.
Adorkable: Umi, who tries to be the group's Straight Man but can't help but imagine and practice cutesy idol routines in private.
Archer Archetype: Umi is one of the calmest and most down-to-earth of the girls, and is in the archery club.
Beware the Nice Ones: Umi slept through episode 10's pillow fight, until some of the girls accidentally hit her. When she gets up, all of the girls, even the Eli and Nozomi have an Oh Crap look in their face, and when Umi throws the pillows, they seem to hit rather hard. It takes Maki and Nozomi throwing at the same time to knock her back out.
She claims to be super childhood friends with Honoka because their mothers were childhood friends too.
Expy: Character-wise, she is an expy of Mio. Both have Performance Anxiety, are the songwriters of the group, and believe their best friend is bossy and pushy. Visually, she shares similarities to Chihaya with her long blue hair and slender build; their voice can also be considered similar.
Tomboy with a Girly Streak: More tomboyish than the rest of the girls, and is noticeably worried about being too tomboyish to wear frilly skirts, but still loves the idea of being an idol.
Verbal Tic: Sometimes adds a -nya in the ends of her words.
Image Color: Purple (Red or maroon in pvs)
Voiced by: Pile
A first-year student aiming to be a physician like her parents, and the main composer for μ's.
The Ace: Smart and born to a wealthy family of doctors, beautiful, the group's main composer, and the most popular in-series and out. And if the 6th PV is to be taken seriously, possesses supernatural ability to boot.
Defrosting Ice Queen: Although Eli was one too, it takes Maki longer to warm up to the group, and she doesn't take part in too many of the non-idol activities. However, Nozomi tries to help bring her into the group more, and she ends up joining them in the pillow fight during episode 10.
Nice Hat: Wears a ballcap with her practice clothes and often gets one in costume.
The Ojou: Comes from a pretty wealthy family, but subverts this personality-wise. She's relatively polite, but often standoffish and blunt.
Refusal of the Call: While she hovered around Honoka's group early on, she always claimed she wasn't interested in joining. However, around the time Hanayo and Rin join, she feels compelled to as well, and ultimately relents.
Tsurime Eyes: Nico even refers to her as "You, with the slanted eyes!" during practice. Which probably got a snicker from Western audiences.
Image Color: Violet
Voiced by: Aina Kusuda
Eli's best friend, a third year and the vice-president of the Student Council in the anime. She is none of those things outside of the anime.
The Chessmaster: She is a mild example. Episode 8 reveals that she had been prodding them along with fortune-telling, from as early as when they were asking for name suggestions, so they would reach nine members. She played a significant role in getting Nico, Maki and Eli to join, and getting Maki to want to join also indirectly helped prod Hanayo, which also resulted in Rin joining.
Green-Eyed Monster: She tries to tell Honoka to disband her idol group early on. Nozomi tells them that Nico originally tried to form an idol in her first year, but her standards were set too high for the other members, and they gradually quit one by one. Honoka gets around this by including her in the group, and getting her advice, however unusual it may be. She noticed that while Nico was criticizing them, it also meant she was paying close attention, and probably wanted them to succeed secretly. It seems to work, as once they start genuinely asking for Nico's advice, she mellows out and starts taking part in their group.
The Leader: On paper, as the chairman of the Idol Research Club.
Supreme Chef: She tries to lie about it in episode 10, claiming she has a personal chef. But later that night, she ends up cooking curry for the group, and while it was good, several of the other girls ask about what she said earlier about not cooking. Nico tries to play it off by saying idols should at least know how to cook, but no one buys it.
The Team Wannabe: While she was overly critical of Honoka's group early on, the latter noticed she was always watching them as well. Once they include her in the group, Nico starts being much more friendly.