Xenopa Prime

Xenopa Prime (or XENO-P) is a Universe outside of Cruul's reality. It is relatively close compared to most other universes and it is one of the few universes to have actually sent visitors to Cruul's dimensional reality. 
XENO-P is home to billions of races and creatures very alien to our understanding of life, with many of them employing technologies or magics that we do not understand fundamentally or at all. Various Xenopian artifacts have been witnessed or obtained over the ages but these events are very rare and consider extremely esoteric in nature. The average scholar does not even consider other Universe's to be possible, but there is a growing fringe theory amongst radical thinkers that other Universes do exist, complete with new people, technologies and Gods.
XENO-P is highly populated with countless space traveling species that can explore the vast expanses of their own Universe with ease, going between spheres of land called "planets" or "celestial bodies" on technological vehicles or other unexplained technologies.
Xeno-P is unknown to most living things in Cruul and only recently has there been a real threat from there. In A4 998, Campaign 1: Legends of New Light dealt with aliens from XENO-P called "Arkains", tall blue humanoids from their homeworld "Arkainus".