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김선아

Kim Yoo-ri

이범수

Mr Gong

Roh Hyung-wuk

Dong-hyun

Jeon Jae-hyeong

Seok-gu

Jeong Dae-hoon

Sang-min

An Jae-hong

Young-je

Park Yong-sik

Chief of school affairs

김애경

English teacher

김종민

PE teacher

김기연

Yoon So-jung

유나미

Woman in Water 2

신현탁

Cheon-soo

Jang Ji-yong

Gang

이수현

Helmet

Park Sol

Roller

하아름

Bad Girl