: Played by Lee Jong-suk , a shadowy director of a research institute.
Following a bloody raid on a secret laboratory, a mysterious young girl (referred to as ) emerges as the sole survivor. She escapes and is found by Kyung-hee , a civilian protecting her home from a local gang. As Ark 1 begins to adapt to the outside world, she is relentlessly pursued by various factions—including government agents, mercenaries, and other superpowered test subjects—all intent on capturing or silencing her. Key Characters & Cast The Witch: Part 2. The Other One
: Played by Shin Si-ah , she is the "twin sister" of Goo Ja-yoon from the first film and possesses even more devastating psychic powers. : Played by Lee Jong-suk , a shadowy
: Kim Da-mi returns in a special appearance to bridge the stories of the two sisters. How it Connects to Part 1 As Ark 1 begins to adapt to the
: Played by Seo Eun-soo , a head office agent tasked with eliminating the girl.
: Played by Park Eun-bin , she provides Ark 1 with a brief sense of home and family.