- Sul Kyung-gu
- Captain Kang Young-ki
- Son Ye-jin
- Seo Yoon-hee
- Kim Sang-kyung
- Lee Dae-ho
- Kim In-kwon
- Sergeant Oh Byung-Man
- Ahn Sung-ki
- Yeouido Fire Station Chief
- Song Jae-ho
- Mr. Yoon - Old Man
- Lee Joo Shil
- Mrs. Jung - Mr. Yoon's Friend
- Lee Han-wi
- Mr. Kim - Church Elder
- Kwon Tae-won
- Fire Commissioner Jang
- Jeon Guk-hyang
- Ae-ja
- Jeong In-gi
- Cha - Safety Section Head
- Cha In-pyo
- President Jo
- Jeon Bae-soo
- Young-cheol - The Cook
- Jun-seo Park
- Aide
- Kim Sung-oh
- In-geon
- Min-Young
- Nam-ok - Pregnant Woman
- Lee Joo-ha
- Min-jung - The Receptionist
- Do Ji-han
- Lee Seon-woo
- Jin Mo
- Yeouido Fireman
- Lee Sang-hong
- Yeouido Fireman
- Chu Min-ki
- Yeouido Fireman
- Kang Poong
- Yeouido Fireman
- Chang-Yong Lee
- HQ Command Specialist
- Kwon Hyun-sang
- Young-hoon
- Chang-joo Lee
- Jo's private secretary
- Park Chul-min
- Head cook
- Kim Eung-soo
- Jin
- Park Jeong-hak
- Jung
- Park Yong-soo
- Park
- Tommy Arciniega
- Additional Voices
- Geoff Bisente
- (voice)
- Johnny Yong Bosch
- Seon-woo
- Edward Bosco
- Sang-Hong
- Sean Chiplock
- Byeong-man
- Darrel J Delfin
- Additional Voices
- Lucien Dodge
- In-geon
- Dorothy Elias-Fahn
- Young-Ki's Wife
- Dorah Fine
- (voice)
- Erin Fitzgerald
- Yoon-hee
- Todd Haberkorn
- Yeong-Cheol
- Erika Harlacher
- Min-jeong
- Kyle Hebert
- Mr. Kim
- Rachelle Heger
- (voice)
- Choi Jae-sup
- Taxi driver
- Amanda Kay
- (voice)
- Wendee Lee
- Politician's Wife
- Dave Mallow
- Consultant
- Jo Min-ah
- Ha-na Lee
- Cassandra Lee Morris
- Ha-na
- Tony Oliver
- Jin-Mo
- Yeong-su Park
- Believer
- Patrick Seitz
- Dae-ho
- Victor Sgroi
- (voice)
- Michael Sorich
- Chef
- Kaiji Tang
- Lieutenant
- Chris Tergliafera
- (voice)
- Joe Thomas
- Fire Chief
- Bobby Thong
- (voice)
- Kirk Thornton
- Young-Ki
- Vic Victorson
- Commissioner Jang
- David Vincent
- Chairman Jo
