Mortus Prime is a planet that is notably home to the Int'mbra species.
Mortus Prime is a planet with thousands of underground tunnels. Int'mbras spend the entire day here, before pouring out onto the surface at night. It also has numerous villages that are home to an unknown species.
Mortus Prime enjoys a humid continental climate. Int'mbras tend to be barely active during the summer, but they're very active during the winter.
Mortus Prime was originally uninhabited prior to being seeded by an unknown species. All documents about this planet's history were lost when Galvan Prime was destroyed during the Highbreed War.
During the Incursean War, Mortus Prime was invaded by the Incurseans and has been occupied since then. No one has bothered to challenge their rule of this planet.