Elemental

Elementals are the manifestations of one of the four elemental planes: earth, air, water, or fire. They are raw elemental energy made manifest, and can exist as both corporeal and non-corporeal (though often choose the former over the later). They are ageless and undying, unless slain in their native plane. They do not eat, sleep, grow tired, nor suffer poison or disease.

Overview
The four major types of elementals are earth, wind, fire, and water, though variation upon these four elements are not uncommon. Their corporeal forms appear roughly humanoid, with hands and fingers, though generally do not possess legs or a lower body.

Earth
Earth elementals often appear as stone constructs assembled from bits of stone of various sizes. They are extremely durable and possess incredible strength.

Air
Air elementals take the appearance of a swirling vortex with arms, and eyes made of lightning. They have no real discernible features beyond their tornado-like form.

Water
Water elementals appear as a human-sized tidal wave.

Fire
Fire elementals are the most humanoid of the four types, possessing legs, arms, and a humanoid torso. They stand tall, their appearance that of a contained inferno.