A livestream participant who attempts to open the sealed Room 402 alongside Je-yoon. She later reunites with Sung-hoon inside the hospital and becomes trapped in a dark, flooded room with him and Je-yoon, where they are eventually surrounded and possessed by ghostly apparitions.
Allies who work together to breach Room 402 under supernatural pressure.
Partners tasked with opening the heavily guarded room.
Ah-yeon is isolated in the water room and succumbs to possession.
Explore the full interactive character relationship map of Gonjiam: Haunted Asylum