I was wondering if you have any other characters/ species that relate to the dreamons or are in the same world that are not dreamons?
The Dreamons are their own race through and through and there are no other natives to their world. However the Dreamons have a lot of diversity in their ranks.
Oranhamme and his kin plus Fairy are not the only type of dreamon. There are actually a lot of other species with different looks and functions. They may all share that hand/eye body horror motif but there are various powers and niches that they fulfill in their own world!
They may travel to a lot of worlds and visit many places while dealing with many other types of sentient life but none of those ties are natural or from something like a similar home plane etc.