In the Dungeons & Dragons fantasy role-playing game, celestials are a class of creatures and monsters known as outsiders who are of wholly good alignment.
In the context of the Dungeons & Dragons games they represent forces of armed justice, and include iconic “good” creatures from history and myth, such as angels, who seek out and destroy evil.
All celestials hail from the Upper Planes.
There are four published types of celestial: Aasimon (or devas or angels), Archons, Eladrins, and Guardinals, each with varying “good” outlooks and motivations. The celestials are led by celestial paragons, unique creatures presented in Dungeons and Dragons lore as polar opposites of the demon princes and archdevils.