강시현
— Na Aeri / Go Eunae (voice)
정혜원
— Hany (voice)
홍범기
— Mr. Hong / Student 1 / Student 5 / Bench Man (voice)
이새벽
— Rapid Ju (voice)
이상호
— Lee Changsu / Play-by-play Commentator / Doctor (voice)
김현욱
— Yoo Juntae / Principal / Long-legged Athlete / Student 2 (voice)
곽규미
— Mina / Lee Seoyeon / Bully Girl 2 / Bully Girl 4 / Student 3 (voice)
최낙윤
— Na Aeri's Father / Color Commentator (voice)
Kim Ye-jin
— Bully Girl 1 / Bully Girl 3 (voice)