Characters played by Yu-mi Jung
Ahn Eun Young
Characters played by Nam Joo-hyuk
Hong In Pyo
Characters played by Shim Dal Gi
Lucky
Characters played by Dylan J. Locke
Additional Voices
Young Kang Sun
Characters played by Ju-Young Lee
Han Ah Reum
Characters played by Jenny Yokobori
Radi
Gweong-Hwa
Characters played by Lee Suk-Hyeong
Ruckus
Characters played by Shin Yun-Seob
[no data]
Characters played by Hyun Woo-Seok
Oh Seung Gwon
Characters played by Park Se-Jin
Jang Radi
Characters played by Park Hae-Eun
Jellyfish
Characters played by Kwon Young-Chan
Lee Ji Hyeong
Characters played by Joo Yeon-Woo
Hoop Squid
Characters played by Teo Yoo
Mackenzie
Characters played by Moon So-ri
Hwa Su
Characters played by Edward Hong
Kim Kang Sun
Characters played by Jeon Gook-hwan
Chairman Hong Jin Bum
Characters played by Ewan Chung
Mackenzie
Characters played by Go Yoon-Jung
Choi Yoo Jin
Characters played by Jaeun Koo
Nurse
Characters played by Ki-Cheon Kim
Principal
Characters played by Kyung-Hwa Oh
Oh Gyeong Hwa
Characters played by Lee Jong-Won
Club member
Characters played by Jang Joon-Hyun
PE teacher
Characters played by Lee Hyo-Bi
Ahn Eun Young (young)
Characters played by Nak-Kyeong Seong
Security Guard