River Styx

River Styx is the river that forms the boundary between Earth and the Underworld, ruled by Hades in ancient Greek mythology. It is the passageway of the dead, where the souls pass into the afterlife. The river also appears in the Disney animated film, Hercules, in the form of a vortex, where the souls wander relentlessly. The Disney's version of the River Styx also appears in the villain tournaments, reminiscing it's role to that of the original Disney film.