Kentauros

Kentauros (ケンタロウス Kentarousu) is a member of the Super Spot-Billed Duck Squad led by Carue along with Stomp, Ivan X, Cowboy, Hikoichi and Bourbon Jr.. He wears a Roman soldier helmet, smokes a cigar and always seems angry. He was Zoro's duck on the way back to the Going Merry.

Trivia

 * His name is another way of saying "Centaur" (which is also what he's called in the Viz Manga).
 * Centaur (Κένταυρος in greek) was a mythological creature, which was part human and part horse.