|Hair Color||Pink (fur)|
|Family||Usagi - older brother|
|Voice Actress||Sumire Morohoshi|
Usacha is a small, pink baby bunny with small ears, yellow wings, and large sparkly eyes. She has a little heart-shaped bow accessory on her chest, and two small red bows on the back of her ears. Like her brother, she has argyle patterns on her ears and bow, but instead of the lines crossing through diamonds, they cross through hearts. She is noted for being very cute and according to Dorothy, looks nothing like Usagi.
As a young mascot, Usacha still notably has quite a bit to learn. Despite that, she's very inquisitive and wants to learn as much as she can. She holds a deep level of respect and admiration for Usagi and idolizes him as the perfect older brother and greatest mascot, which caused Usagi to want to appear to be as incredible as she saw him. She's very innocent and a bit gullible, but is very well-meaning, obedient, and earnest nonetheless. She incorporates the word "cha" (チャ from "Usacha") into her words and sentences.
Usagi - Her older brother who she loves and idolizes deeply. She wishes to become a manager as great as him one day and sees him as someone who does no wrong. Because of this and her own general innocence, when she saw his attraction to Neko, she was deeply hurt as her image of him being the perfect older brother and mascot was crushed. However, with Laala's help, she was able to understand that despite Usagi's faults and the bad points of his personality, he works hard for Usacha's sake and loves her very much.
Hikari Todo - She is Hikari's manager in PriPara.
Junon - She is Junon's manager.
Pinon - She is Pinon's manager.
Kanon - She is Kanon's manager.
- She tends to say things such as hajimemashicha (はじめましチャ) instead of hajimemashite (はじめまして it's nice to meet you ), possibly due to her young age and verbal tic.
- She shares her voice actress with Ichigo Hoshimiya from Aikatsu!, another idol anime series.
- She is the second manager to manage more than 3 idols. She is preceded by Kuma.