Naming of moons underworld, and Nix (a respelling of Nyx), mother of Charon, is the goddess of darkness and the night. Kerberos is a giant three-headed dog who guards the entrance to the underworld. The fifth moon is named for the river Styx that forms the boundary between the worlds of the living and the dead. The name of Eris's moon Dysnomia was suggested by its discoverer Michael E. Brown, who also suggested the name of the dwarf planet. The name has two meanings: in mythology Dysnomia (lawlessness) is the daughter of Eris (chaos). However, the name is also an intentional reference to
Mythology of The X-Files mythology, and instead focus on a story arc involving Mulder and Scully attempting to track down their son William. Jay Anderson, writing for What Culture, described the mythology entries as "some of the best of the series, featuring many superb acting performances, well-crafted scripts, and nail-biting endings". Anderson added that the mythology "really held the show together". Andrew Payne of Starpulse named the "original" mytharc of seasons 1-6 a "37-way-tie" for the fifth best episode of the series, explaining that it "was the thing that made "The X-Files" the best show on television during its first six seasons". However, he