Moocy

A bull named by Luffy.

Once a murderous bull that took down 21 death row inmates, known as "Brutal Bull" and "Reaper of the Coliseum." Birthday is April 21st (from the 21 people he took down, and "ushi" which means cow in Japanese, is associated with the number 4).

He grew attached to Luffy in Block C but was defeated by Hajrudin. After the "Birdcage" was activated, he carried Luffy and others towards the royal palace but fell into Kelly Funk's trap and was immobilized underwater, where he was attacked by Doflamingo's "String Shadow" and severely injured, forcing him to withdraw.