Robot Sound - Cast

Lee Sung-min

Hae-Gwan
Actor

Shim Eun-kyung

Sori (voice)
Actor

Lee Ha-nee

Ji-yeon
Actor

Chae Soo-bin

Yoo-joo
Actor

Lee Hee-jun

Jin-ho
Actor

Kim Won-hae

Goo-cheol
Actor

Ryu Jun-yeol

Underground Singer
Actor

Jeon Kuk-hwan

President Go
Actor

Kwak Si-yang

Hyeon-soo
Actor

Jeon Hye-jin

Hyun-sook
Actor

Lee Yeong-jin

Yoo Sung-jin
Actor

Kang Jin-ah

Jang Geun-yeong
Actor

Nam Yeon-woo

NIS agent
Actor

Yang Kyung-won

NIS agent
Actor

Lee Hyun-gul

Police
Actor

JJ Graham

U.S. military officer
Actor