Walrus4 is an evil walrus, and also was a henchman in the Walrus Crime Ring. He was the fifth Walrus to ever come to Antarctica, the first being Walrus (character), the second being Walrus1, the third being Walrus2 and the fourth being Walrus3. Walrus4 is also the fourth oldest of the Walrus Brothers. He was a keen hacker, and always took charge of a raid when he was in the Walrus Crime Ring.