Standing at 10'1, Uni is a pirate under Trafalgar Law's Heart Pirates. He has olive skin, eyes with no pupils, dark brown, puffy hair, and wears a long, gray bandana that covers his mouth. He wears a white boiler suit with the Heart Pirates logo on the left of his chest. Uni often acts rough and coarse with anyone, but is refined when being with friends, and more cordial with Captain Law. During missions, he is serious and always wants everything straight to the points.