An elemental is a spirit that is attuned with, or composed of, one of the elements: air, earth, fire and water. The elements balance each other out through opposites: water quenches fire, fire boils water, earth contains air, air erodes earth.

The appearances of the four main elementals are as follows:
Earth Elemental -- Gnome
Water Elemental -- Undine
Air Elemental   -- Sylph
Fire Elemental  -- Salamander

Tuxedo-wearing Ice Elementals were a commonplace at wizard conventions. These magical waiters served water after breaking off their own icicles.

Elementals are members of the Supernatural and Fantastic Wayfarers Association.

SOURCE(S): The Zork Chronicles