Unit 631

is underground fight club and formerly South Korean military unit. It appears on Peninsula.

History
According to Min-Jung, they're military unit who rescuing civilian during South Korean Outbreak. Few years later, they attempt to send SOS for escape like Elder Kim did to Major Jane however it didn't response. After that, They surrendered left behind and become insane after all. Min-Jung along with her family escaped from Unit 631.

It first appear when they discovered one of Jung-Seok's teammate and then they betray and killed him. Then, they run away and took the run into their compound which abandoned mall and discovered Chul-min which he imprisoned and taken into gladiator between prisoners and infected despite he revealed that he has satellite phone which the member's careless to know about it.

Private Kim discovered a dozen of bags contain full of US Dollar which soon he tells to Captain Seo without notifying Sergeant Hwang and Seo receives call from Hong Kong's Mobster that they had waiting for the money.

Captain Seo later informed Sergeant Hwang and all of Unit 631's member by lying to them about his escape. Private Kim soon threated by Min-Jung for secure Jung-Seok's mission to rescue his brother in-law (which later he killed after the mall has been overrun by zombies) and later shot by Captain Seo after the truck. As Jung-Seok, Min jung along with her family escape to the harbor, Unit 631 chased them in pursuit until several members overrun or crashed while Sergeant Hwang is attacked by the horde after Jung-Seok shots the glasses letting the horde attacking Sergeant Hwang.

Members

 * Sergeant Hwang
 * Captain Seo
 * Private Kim

Trivia

 * All of Unit 631's Members are consisted former military soldiers and the unit.
 * Their base is located at abandoned mall in Incheon.