Gryn'jott

Gryn'jott is a barren desert planet that was the site of the Portal Gang's home base. In Superhero RP 3, several superhuman children were kidnapped by Black Hole and brought to Gryn'jott via teleportation. Slip was also able to travel there in his spaceship via a wormhole.

Characters are able to exit the Portal Gang's base without any adverse effects, indicating that Gryn'jott has a breathable atmosphere and a climate similar to the deserts of Earth. Despite this, it seems to be completely uninhabited, which is likely why it was chosen by the Portal Gang.