Decibel

Kim Rae-won

as Kang Do-young

Lee Jong-suk

as Jeon Tae-sung

Jung Sang-hoon

as Oh Dae-oh

Park Byung-eun

as Cha Young-han

Lee Sang-hee

as Jung Yoo-jung

Jo Dal-hwan

as No Jeong-seop

Cha Eun-woo

as Jeon Tae-ryong

Lee Min-ki

as Hwang Young-woo

Kim Seul-gi

as Han Mi-nyeo

Kang Kyung-hun

as Superintendent

Woo Ji-hyun

as Kim Yoo-taek

Noh Sung-eun

as Cook

Lee Seung-hun

as Lieutenant Kim

Yoon Jung-yeol

as Captain

Kim Geon

as Radar Specialist / Security Agent (voice)

Jang Se-won

as Engine Room Crew Member 1

Ahn Tae-hwan

as Engine Room Crew Member 2

Ryoo Si-an

as Engine Room Crew Member 3

Myeong Hong-jin

as Chief Engineer / EOD Specialist (voice)

Han Min-yeob

as Second Lieutenant Kim

Kwon Dong-ho

as Lieutenant Cha

Kim Jin-hwan

as Helmsman 1

Wi Min-gook

as Helmsman 2 / Reporter 3 (voice)

Kim Ho-jun

as Crewman in the Berthing Area 1

Son Yoon-hwan

as Crewman in the Berthing Area 2

Jeong Da-on

as Crewman in the Berthing Area 3

Oh Dong-hoon

as Crewman 1

Seo Woo-jin

as Crewman 2

Lee Han-ju

as Crewman 3

Son Seung-beom

as Crewman 4

Lee Hwa-young

as Crewman 5

Han Gi-chan

as Crewman 6

Jeong Won-seok

as Crewman 7

Kim E-jun

as Crewman 8

Shin Young-chan

as Crewman 9

Seong Baek-in

as Crewman 10

Kim Dong-hun

as Crewman 11

Kim Dong-in

as Crewman 12

Phillip Ryu

as Crewman 13

Jeong Yool-geon

as Crewman 14

Jang Yong-hee

as Crewman 15

Lee Young-hoon

as Crewman 16

Park Soo-hyeon

as Crewman 17

Cho Kang-hyuk

as Crewman 18

Jeong Min-soo

as Crewman 19

Lee Hoo-lim

as Crewman 20

Choi Yoon-bin

as EOD Specialist 1

Im Byeong-taek

as EOD Specialist 2

Jung Hyun-wook

as EOD Specialist 3

Park Sang-woo

as EOD Specialist 4

Sin Hyeon-seo

as EOD Specialist 5

Park Cheon-gook

as EOD Specialist 6

Jeong Hyeon-woong

as EOD Specialist 7

Hyung Young-sun

as Chairman of the Joint Chiefs of Staff

Kim Yong-woo

as Submarine Commander

Park Jae-yeong

as Representative of the Bereaved Families of ROKS Halla Victims

Lee Sang-ha

as Defense Security Command 1

Lim Seung-mook

as Defense Security Command 2

Kim Yong-ho

as Defense Security Command 3

Tak Hwan-ui

as Defense Security Command 4

Lee Young-joo

as Woman Chatting in Cafe 1

Jeon Del-ta

as Woman Chatting in Cafe 2

Eom Ji-hyeon

as Woman Chatting in Cafe 3

Go Doo-ok

as Woman Chatting in Cafe 4

Jeon Tae-won

as Cafe Staff 1

Sim Ji-na

as Cafe Staff 2

Kim Seung-pil

as Bumping Man

Lee Do-yoon

as Football Coach

Kim Seon-jin

as Football Referee 1

Heo Chang-hwan

as Football Referee 2

Lee Yeong-joon

as Football Referee 3

Moon Seong-hwan

as Football Referee 4

Park Hyeon-yong

as Football Player 1

Kim Seong-rok

as Football Player 2

Park Jeong-min

as Football Player 3

Lee Tae-gwan

as Football Player 4

Seo Min-chan

as Football Player 5

Yoon Se-joon

as Football Player 6

Heo Chang-jin

as Football Player 7

Jo Bo-jeong

as Football Player 8

Jeong Seung-min

as Football Player 9

Lee Ji-min

as Football Player 10

Choi Ji-soo

as Football Player 11

Kim Tae-bin

as Football Player 12

Yoon Hyeong-heon

as Football Player 13

Oh Jae-hong

as Football Player 14

Kim Hong-jin

as Football Player 15

Choi Won-jae

as Football Player 16

Kim Jae-kyeong

as Football Player 17

Jo Jeong-hoon

as Football Player 18

Ahn Sang-hyeok

as Football Player 19

Park Soo-hwan

as Football Player 20

Sin Gyoo-cheol

as Football Player 21

Bae Jin-woo

as Football Player 22

Lee Jun-hee

as Football Player 23

Lee Joo-ho

as Football Player 24

Lee Joo-yeong

as Football Player 25

Kim Jong-hoon

as Football Player 26

Lee Seung-hwan

as Football Player 27

Song Joon-ho

as Football Player 28

Kim Joon-woo

as Football Player 29

Ha Jae-wook

as Football Player 30

Kim Jeong-bin

as Football Player 31

Park Hae-gong

as Football Player 32

Park Yoon-gwan

as Football Player 33

Kim Min-joon

as Football Player 34

Hong In-soo

as Football Player 35

Lee Sang-hwa

as Football Player 36

Kim Kyeong-goo

as Football Player 37

Ahn Yeong-sik

as Football Player 38

Shin Yun-ju

as Kang Seol-yeong

Lee Jae-jun

as Oh Byung-gu

Jo Yeon-woo

as Dae-woo

Lee Jong-wook

as Lieutenant Lee / Jeon Tae-sung (voice)

Kim Jung-woo

as Team Leader Lee

Na Hyun-woo

as Sung-woo

Park Sung-hoon

as Executive Director Lee

Park Jin-soo

as Minister of National Defense

Cha Jeong-hwan

as Secretary to the Minister of National Defense

Choi Mi-ra

as Captain Hwang's Wife

Lee Seung-joon

as Commander, Republic of Korea Fleet

Jeong Woo-hyuk

as Chief of Naval Operations

Han Chang-hyun

as Director of the Agency for Defense Development

Han Sang-kyung

as Yeong-man

Nam Tae-hoon

as Su-yeong / Reporter 2 (voice)

Yoo Min-suk

as Man-su

Go Tae-yeong

as General Manager Jeon

Kim Hyeon-dong

as Assistant Manager Kim

Yoon Ji-hee

as VIP Mom

Kim Seo-jun

as VIP Boy

Seo Yeong-jin

as President of the Football Association

Yoon Hyun-gil

as President of the Football Association's Wife

Son Gwang-ik

as Busan City Council Member

Park Ji-won

as City Council Member's Wife

Park Cheol-hong

as Minister of Culture and Sports

Seo Ji-won

as VIP Man

Choi Hyeon-joo

as Kim Yoo-taek's Wife

Kim Yool

as Kim Yoo-taek's Son

Lim Seo-young

as Han Mi-nyeo's Colleague 1

Lee Hyeon-ha

as Han Mi-nyeo's Colleague 2

Son Seo-yeong

as Han Mi-nyeo's Colleague 3

Lee Jung-jun

as Cadet 1

An Da-jung

as Nurse

Kim Seung-min

as Consulting Physician

Yun Ki-chang

as Man Opening a Window

Won Si-hyeon

as Woman Who Looks Like Jeon Tae-sung

Kim Ha-rang

as KakaoTalk Woman 1

Sul Youn-ji

as KakaoTalk Woman 2

Jeong Hyun-ji

as KakaoTalk Woman 3

Lee Yoon-ho

as Reporter 1

Cha Jae-hyeon

as Reporter 2

Jeong Jae-hoon

as Security Team Leader

Cho Han-gyeol

as Security Team Member 1

Im Byeong-cheol

as Security Team Member 2

Heo Tae-kyeong

as Police 1

Kim Hak-dong

as Police 2

Kim Jang-won

as Doctor

Lee Na-min

as VIP Room Nurse 1

Joo Yeon-a

as VIP Room Nurse 2

Choi Joon-seok

as Delivery Driver

Jeong Myeong-jin

as Detective 1

Shin Chi-young

as Detective 2

Jeong Si-hoo

as Detective 3

Oh Eun-ji

as Employee

Choo Seong-min

as Male Customer

Jeon Han-na

as Woman Cheering at the Stadium

Chae Si-eun

as Female Teacher 1

Jeon Ah-hee

as Female Teacher 2

Lee Ha-yool

as Little Girl

Seo Jeong-min

as Lifeguard

Yoon Jae-hyeong

as Football Field Security Guard 1

Kim Jin-woo

as Football Field Security Guard 2

Shim Sang-min

as Football Field Security Guard 3

Oh Tae-seung

as Football Field Security Guard 4

Kim Jeong-il

as Injured Person on Football Field 1

Lee Sang-hyeon

as Injured Person on Football Field 2

In Chang-soo

as Injured Person on Football Field 3

Bae Jae-wan

as Injured Person on Football Field 4

Lee Yoo-joo

as Injured Person on Football Field 5

Jo Hye-ri

as Injured Person on Football Field 6

Lee Seong-hwan

as Injured Person on Football Field 7

Kim Soo-bin

as Injured Person on Football Field 8

Baek Seung-min

as Injured Person on Football Field 9

Kim Sang-ryeol

as Injured Person on Football Field 10

Park Je-yeong

as Injured Person on Football Field 11

Kim Min-seok

as Injured Person on Football Field 12

Kang Mi-jeong

as Injured Person on Football Field 13

Yoon Ji-min

as Injured Person on Football Field 14

Seol Min-kyeong

as Injured Person on Football Field 15

Han Woon-ji

as Rooftop Garden Military Band 1

Park Min-ji

as Rooftop Garden Military Band 2

Kim Wooi-jeong

as Rooftop Garden Military Band 3

Yoon Ji-yeong

as Rooftop Garden Military Band 4

Bae Seong-jae

as Announcer (voice)

Jung Ji-hyun

as Commentator (voice)

Jo In-woo

as Jeon Tae-sung (voice)

Lee Seung-hun

as Jeon Tae-sung (voice)

Kim Ye-jin

as Announcer 1 (voice)

Kim Se-yeong

as Announcer 2 (voice)

Choi Chang-eun

as Announcer 3 (voice)

Kim Ji-yoo

as Announcer 4 (voice)

Lee Sa-moon

as Announcer 5 (voice)

Seo Hye-jin

as Apartment PA System Announcement (voiceover)

Lee Hyeon-ah

as TV News Reporter (voice)