A Holy Land
The Diplo was not a very prevalent species in the origin realm, but that surprised no one. Their short stature, weak bodies and general ineptitude in cultivation put them on the low end of almost every food chain that existed. Though they were an intelligent species, their generally disgusting appearance did not earn them any favors with most other intelligent species, leaving them to live an unfortunate existence.
At Orange Bastion, though, something unusual happened. The planet used to be like any other that could support life, and was ruled by a naturally powerful predatory species. Eventually it was colonized and other intelligent species started living there, though the Diplo did not receive favorable treatment despite being natives of the planet.