Joining the trend too, I asked my 9-years-old cousin about Bandori characters' personalities, judging by the group art that pops out whenever the game has to download something:

Rimi: She's shy. She's like the ones that give stuff to the others but never leaves anything for herself

Arisa: She's funny and very clumsy. She accidentaly throws plates of food to Tomoe [i mean like she has the plate on her hands but trips and drops it] but sometimes she does it on purpose because she's her sister and she hates her [yeah I was shocked too]

Kasumi: She's kind. She's a bit mean with his brother [she made that up lol]

Saya: She likes stars and space

Tae: She likes gothic fashion and likes to wear tops

What does the group do together?: They talk about boys

Tomoe: Believes she's the best. She's very very evil.

Himari: The one that plots all of Tomoe's evil plans. The smart one

Ran: Just. Gothic

Moca: She's shy. Like a 25/28.

Tsugumi: She's the funny and clumsy one of the group. She also works with Tomoe and Himari.

What does the group together?: They plot evil plans aganist Poppin' Party and they steal their boyfriends [... woah]

Hina: She's funny and generous. Like a 10/10 on being generous

Eve: She's a bit clumsy... She likes to play board games

Aya: She's the leader [she means like the leader of all of the girls]. She's good and kind with everyone

Maya: Shy level 5/28 [what does this even mean]

Chisato: Funny and the dumb one [i think not?]

What does the group do together?: They make their dresses

Rinko: She's kind and she likes purple

Ako: She's very funny!!

Yukina: She's the girl that's always like "i am always going to disagree with you" [i mean you're not completly wrong]

Lisa: I don't know...

Sayo: She looks shy...?

What do they do together?: They practice kung-fu [what the...]

Hagumi: She looks funny and kind

Michelle/Misaki: gasps she's so cute...

Kokoro: She looks smart

Kanon: She's kind but a bit clumsy

Kaoru: She looks like Merlin from Nanatsu no Tanzai [i dont even remember what was this anime about lol]

What do they do together?: They visit amusement parks

... So yeah that was it! Sorry for the boring responses (i think she's good the love live-like idea that there are always similarities between the group members' personalities lol). Please leave comments I'm dying for responses ple as e