If you want to dress up as a Squid Game character, the good news is the costumes aren’t complicated. There’s the unnerving Red Light, Green Light robot girl; the pastel-candy-colored stairways in the building where the doomed contestants live; and, of course, movie halloween costumes the striking costumes. Standing in a rainbow tent complete with balloons and streamers, the actress had to mention one of her most famous roles- Halloween.