Monster High Haunted Student Spirits River Styxx Doll When things take a spooky turn in Monster High Haunted movie, the ghouls make some new friends to save Spectra Vondergeist from a life of chains -- detention chains River Styxx is the Daughter of the Grim Reaper She wears a hauntingly boo-tiful outfit with chain details and carries a scythe (with bow!) Pose the dolls in their translucent, chain link doll stands for a hauntingly boo-tiful display that makes them look like they're floating! Use the included hairbrush to create a hair-raising look and collect them all to add to the frights!