Cast of Big Mouth

Meet the talented cast of Big Mouth. From main characters to supporting roles, discover the actors who bring this show to life.

Starring: Lee Jong-suk as Park Changho, Yoona as Go Miho, Kim Ju-hun as Choi Doha, Kwak Dong-yeon as Jerry, Yang Kyung-won as Gong Jihoon, Ok Ja-yeon as Hyeon Joohee, Oh Eui-sik as Kim Soontae, Kim Jeong-hyeon as Jung Chaebong, Lee Yoo-jun as Han Jaeho, Oh Ryoong as Lee Doogeun