Aislinge is a young man of middling height and slender build with pale skin. He has messy blonde hair and blue eyes beneath slender eyebrows. His nose is small and his cheeks gaunt, his lips ever quirked into a smirk, as if he knows a secret no one else does. A scar marks his mouth, slanting on an angle, thin and jagged and pink.

He wears clothing in bright, clashing colours. A blue vest is the norm, worn over a white shirt. He usually wears striped blue-and-orange trousers and a pair of leather shoes. Several throwing knives are tucked into a brace along his belt, along with two more braces strapped to each forearm, beneath the loose sleeves of his shirt.