Homeless man

The homeless man is a supporting character in Train to Busan.

He is protrayed by Choi Gwi-hwa.

He has a severe limp, possibly from tripping or spraining one of his ankles during a zombie attack.

History
This man witnessed the first cases of an unknown virus, which caused him to suffer from PTSD. He goes on a train that leaves for Busan and hides himself in the toilet. He's noticed by Yong-suk, a rich businessman who wants that man to be drop off. Although an attendant tells him to go out, the man remains afraid and stays inside.

Later, he was noticed again by Seok-woo after the train passengers began to be infected. The homeless man has heard that passengers arriving at Daejeon will be quarantined and points this out at the station. He then notices an army soldier who is killed by other infected soldiers. The homeless man rescues Seok-woo from a zombie and joins Seong-kyeong, Su-an and In-gil on the departing train. He locks himself with them in toilet because of zombies and they are rescued by Sang-hwa, Seok-woo and Yong-guk. The group is chased again and the homeless man tries to open the door with Yong-guk, which the passengers block to prevent them from entering.

They do this with the help of Seok-woo and the sacrifice of In-gil and Sang-hwa. When passengers reject these survivors, the homeless are the first to leave the car. He therefore goes to the front vestibule with Seok-woo, his daughter, Seong-kyeong and the two teenagers Jin-hee and Yong-guk. He learns that the conductor changes locomotive to continue taking the passengers to Busan.

The homeless man follows the group outside until he is trapped by a train after a violent collision. As Seok-woo finds a way out, the last window on the far back of the crahsed train breaks, resulting in several zombies going towards him, Sung-Gyeong, and Soo-An. Horrified, he looks back to them and the zombies. Feeling pity for Sung-Gyeong and Soo-An, and not wanting to lose anyone again, he sacrifices himself, grabbing a few wires between him and the zombies, blocking them. As the remaining survivors leave the train, Sung-Gyeong gives one last look to him. He tells them to go and hurry, before it's too late. After they leave, he looks back at the zombies, crying. As all the remaining windows break, he still holds on to the wires, accepting his fate.