R.U. Ready?

Kim Jung-hak

Yu Kang-Jae

Kim Bo-kyung

Dan Ju-hie

Ahn Suk-hwan

Hwang No-in

Lee Jong-soo

Jeong Hyeon-woo

Chun Jung-myung

Bong Joon-Goo

Park Jun-hwa

Yoon Won-seok

Baek Sang-Eo

Han Hye-jin

Su-Ra

Han Bo-bae

Ko Kyu-phil

Kang Jae's friend

Lee Kyu-ho

Acting Bear