Archons
Archons are lawful good and found on the plane of Mount Celestia. They consider fiends their sworn enemies and devote their existence to protecting all the free peoples against the tyranny of evil.
In the 4th Edition Monster Manual, an Archon is a medium elemental humanoid, and thus is opposed to the gods, that is made up of one or more specific elements, and is chaotic evil.
Read more about this topic: Celestial (Dungeons & Dragons)