Rilmani
If you're at all familiar with the Great Wheel multiverse of Dungeons & Dragons, you've noticed it has a tendency towards symmetry. The Lower Planes have the various types of Fiends, the Upper Planes have Angels and the various other types of celestials, Mechanus has Modrons and/or Inevitables, Limbo has Slaad; even some of the "in-between" afterlives have dedicated Outsiders, such as the Gehreleth of Carceri. So what about the Outlands? What kind of extraplanar being exemplifies the metaphysical concept of absolute neutrality?
The answer, according to Planescape, is the Rilmani. Sadly, given this was the edition in which True Neutral was synonymous with Stupid Neutral, Rilmani are basically dedicated to "preserving the Balance" by constantly fucking up things for everyone else on the outer planes, based on their own judgment as to when someone gets too strong. Though to be fair, the alternatives would be A) completely apathetic Outsiders who have no goals and never actually do anything, or else B) uniquely animalistic Outsiders that aren't intelligent enough to have an alignment.
| The inhabitants of the Planes of Planescape | |
|---|---|
| Upper Planes | Aasimon • Angel • Animal Lord • Archon • Asura • Eladrin • Guardinals • Lillend |
| Middle Planes | Formians • Githzerai • Inevitable • Marut • Modron • Rilmani • Slaadi • Kamerel |
| Lower Planes | Alu-Fiend • Baatezu • Bladeling • Cambion • Demodand • Erinyes • Hag • Hordling • Imp • Kyton • Loumara • Marilith • Obyrith • Succubus • Tanar'ri • Yugoloth |
| Transitive Planes | Astral Dreadnought • Githyanki |
| Inner Planes | Azer • Elemental • Genie • Grue • Mephit • Salamander • Sylph |
| Sigil | Dabus • Cranium Rat |
| High-ups | Archangel • Archdevil • Archfey • Archomental • Demon Prince |