Libby May

Libby May (リビー・メイ) is a minor character in One of Us Must Go. Libby is a foreign girl that doesn't like when people tell her what to do because she looks little. She's best friends with Katsura Mikan.

Episode 23
Libby holds a party at her house but then she finds out there's a villain meeting in her basement. She tells Mikan to solve the problem, but Mikan is like "there's no bad guys there" when she transforms as Cure Reverie. When Mikan goes back to normal, she sees the villains, calls Akemi and Ai, and everyone is scared.

Trivia

 * Libby's reference image is Kirino Kosaka.