Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. Caroline Igo (she/her/hers ...

That is Young-hee, an innocent-looking robotic doll who has a deadly role to find contestants to gun down playing the game "Red Light, Green Light" if she spots them moving. The doll, who is clad ...