Styx is named after the dog of the Underworld.
 The ferryman Charon is sometimes described as having transported the souls of the newly dead across this river into the Underworld, although in many sources it is instead the Acheron which Charon crosses and which is at the entrance of the Underworld
=== Mythology ===In these myths, Styx supported Zeus in the Titanomachy, where she was said to be the first to rush to his aid

