My Captain Mr. Underground

Jung Jae-young

Dae-chul

Jang Seo-hee

Ae-ran

Nam Ji-hyun

Park Ji-min

Kim Su-ho

Byeong-oh

Lee Do-gyeong

Hal-bae

Hong Seok-yeon

Choenmachong Manager

Lee Hee-do

Member of Cultural Heritage

Lee Ki-young

Detective

Son Byung-wook

Kang-goo

Park Sang-gyu

Manager

Im Cheol-hyung

Doctor

Kim Jae-man

Teacher

Kim Jin-man

Rescue Captain

Yang Joong-kyeong

Ambassador

Sin Joon-beom

Kang-goo's minion

Lee Young-suk

Dog trader

Lee Jeong-woo

Gwang-hyun

Im Hyeong-tae

Antique shop owner

Hong Seok-yeon

Official