Sentinels are serpentine creatures with a head similar to an alligator, two horns and no limbs. While they can slither across the ground, Sentinels are also capable of flight due to its skeleton consisting of enaren ekati which allows them to levitate. Their ekati skulls are also interfaced with their brains allowing them to lift objects off the ground using their minds.
Despite their fearsome appearance, Sentinels are gentle in nature as they feed mostly off of ambient magical energy radiating from Khyorgan. Thus, they grow to enormous sizes. On average, a Sentinel can reach 50 feet in length, while those classed as Commanders can grow to 100 feet.