The Aereis is a four-legged creature covered in black and white fur or feathers with golden accents. It features wings on its head (2 pairs), shoulders (main pair), front legs (1 pair), and a feathery-ended tail (3 pairs), adorned with golden and violet details. The head boasts three eyes, a larger one on the forehead, feathery ears resembling wings, a single horn, and a glowing broken halo that partially loops around the front horn. Ankle spurs decorate its back legs.