Сайджьо Курумі

Kurumi Saijo emerges from Ai's first Wonder Egg. Kurumi is an empathetic girl. She sometimes speaks to others in an authoritative manner, but is a helpful person. She is very sarcastic in serious situations. Kurumi was a student who had no real friends, only the superficial kind with whom you exchange empty phrases. Her Wonder Killer was an unknown schoolgirl with axes who endlessly laughed at her.

(Source: Wonder Egg Priority Fandom Wiki)