Ji-hoon
Hyung-sik
Noh Do-sun
Dr. Lee
Hwang Yun-heon
Yong-mun
X-7
Kim Cheol-su
King Go-jong
Som-doll
Heo
General Charn
Chi Fa
Kim Dong-sik
Dr. Yoon
Dong-sik
Wang-suk
Do-sam
Park
Dr. Park
Detective Koh
Hyungjun
Yun Ki-jun
Ki-taek (Jun-ho's father)
Dong-su
Mr. Jo
Eojin (Oldest son)
Senior stationmaster