Standing 22 feet tall, Kaelthar possesses the imposing silhouette of a thundercloud made flesh. His skin is the color of a deepening twilight sky, shifting from bruised purples to charcoal greys. He moves with a fluid, terrifying grace that contradicts his massive size, often appearing to glide just inches above the ground as if the wind itself supports his weight. His presence leaves a faint smell of ozone and the static hum of an approaching storm in the air. Most striking are his eyes: glowing orbs of electrum that flare with white-gold light when he speaks or casts. He wears his shattered iron manacles as arm-guards, a constant reminder of his past captivity.