Kestrel is a semi-mortal deity taking the form of a black wyvern. Wyverns are NOT the same as dragons as they only have hind legs, much like a bird, and bat-like wings. He has a short sail that spans from the back of his head to the scorpion barb on his tail which is known to spontaneously change color. It emits a pulsating light with each beat of his heart. His eyes always match the color of the sail.