Elemental Lords
The Elemental Lords are the rulers of the Elemental Planes, and are part of the Ancient universe.
Water - Acwalandar[edit]
Air - Shalwend[edit]
Fire - Pyrannaste[edit]
Earth - Gralkor[edit]
It should also be noted that in To Kill A Hero, there is a character called Tamar the Wanderer, self-proclaimed Elemental Lord of Air. However, given the universal, essentially irreplaceable nature of the actual Elemental Lords themselves, this might be a simple disguise, or something else altogether.