Byojack

Byojack is a character in the anime and manga series *One Piece*. He serves as the First Mate of the World Pirates and is the older brother of Byrnndi World. He is an old, frail man with a white beard, a green coat, and a horned helmet with one horn missing. Despite his physical weakness, Byojack is crucial to the World Pirates, primarily functioning as an intelligence gatherer, eavesdropping on Marine and World Government conversations using Den Den Mushi. He often opposes his captain's plans, suggesting they are illogical, and wishes for his captain to view his crew as companions again rather than traitors. Byojack has virtually no fighting strength, usually sitting on World’s shoulder, but is known for his wisdom and advisory role. He co-founded the pirate crew with his brother World, but they were separated when World was captured. Though World is abusive to his crew, Byojack remains loyal to his brother and tries to persuade him to return to their original dreams.