There are seven Fringer worlds that are inhabited to any kind of notable degree.
Erlik is a jungle world, full of deadly flora and fauna and known as the Green Hell. Its few surviving visitors say that "if the plants and animals don't kill you, the heat and jungle rot surely will."
Gymir is a dark and cold planet made up of vast glaciers and frozen seas.
Violent earthquakes and volcanoes shake the small planet of Naraka endlessly. Its air constantly swirls with sulfur and toxic gases.
Taranis was once a vast and prosperous mega city, but is now is in total ruin. Were it not rotted and crumbling, it might be considered beautiful.
Vaitarani is toxic and deadly, littered with the leavings of ancient radioactive fuels and industrial sludge. Even the rain on this planet is acidic.
This almost entirely aquatic planet is wracked by ceaseless storms and terrible winds. Vajra's seas teem with unimaginable monstrosities while its inhabitants try to eek out an existence on its few small landmasses.
Vritra is dry and barren, a desert without end. Its few small settlements huddle around deep muddy wells.