Gyeongseong Creature Guest cast, played by Woo Ji Hyun Episode 1x01: Najin (Dec 22, 2023) Episode 1x02: Mother (Dec 22, 2023) Episode 1x03: Signal (Dec 22, 2023) Episode 1x04: Imprinting (Dec 22, 2023) Episode 1x09: Atrocity (Jan 5, 2024) Episode 1x10: Tear (Jan 5, 2024)