Sonieh is an average sized man, with light colored long shaggy hair on the back of his head, and sideburns. He has a small black goatee, stubble on his upper lip, and a round nose. He wears a rope around his forehead, like other craftsmen, and a cap on his head. Like other foxy pirates, he sports a black mask.
Some time, he was either won or joined the Foxy Pirates as a mechanic and shipwright. After Foxy was defeated by Luffy, he was one of the three shipwrights, along with Gina and Donovan, put up as an offer of a prize. Luffy declined the offer, and took the crew's Jolly Roger instead.