Pluto

Pluto is a dead planet that is home to The Underworld. It has a thick shroud of gas clouds above the skies that hide the true nature of the planet from the eyes of The Lightless. There are currently no inhabitants, as the Plutonians were wiped out due to the events of the first War of Stars. Saturn has attempted to send fleet ships to Pluto to succeed in colonization, but the fleets that land on Pluto end up getting mercilessly slaughtered by The Headless Horseman.