Walter Whitmore is one of the pirate gang that captures Suffolk and the gentlemen.
He is a bloodthirsty man who is in a terrible mood due to the casualties that were inflicted on his crew during the battle, not to mention having lost an eye in the fight. He swears to kill his prisoner rather than ransom him. He hates Suffolk as much as anyone, and is delighted to have the chance to kill him, suggesting that he may torture him before killing him. He has a lower-class accent and pronounces his first name ‘Water’.