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 2012—writing, "is this really what the series was about?" Furthermore, Shearman and Pearson concluded that the problem with the episode was that the show decided "to define itself in the summing up" with the episode, which did not answer very many questions. Tom Kessenich, in his book "Examinations", noted that the episode "told us nothing of significance" regarding the "big picture" mythology story arc. Mythology of The X-Files The mythology of "The X-Files", sometimes referred to as its "mytharc" by the show's staff and fans, follows the quest of FBI Special Agents Fox Mulder (David Duchovny), a believer in supernatural