Gancho is the king, also called “Tonta-Chief,” of the Tontatta Kingdom.

Gancho, like all the other dwarves, is small and has a large fluffy tail, though unlike his people, he lacks a pointy nose. He has long hair with a long beard. He wears a large crown with a robe and sun glasses. He also uses a walking stick to get around.

(Source: One Piece Wikia)