Leorio is a tall, manly-looking, fairly muscular young man with small brown eyes, black hair, and a spiked crew cut. He typically wears a dark blue business suit, black shoes, and a pair of tea shade sunglasses. Some of the people such as Killua near the beginning of the hunter exam, mistake Leorio for an old man, but he is actually a lot younger than he looks, being a teenager and only 19 years old. Leorio is not one to balk and retreat when faced with overwhelming odds in battle.