Willy is an Orca fish-man. He wears a helmet, golden chains around his neck, and an orange shirt with black stripes.
Willy's bounty poster.
Willy's full appearance.
Willy has a strong rivalry with Arlong, something that Nami was worried about. He is also quite insightful, since he realized the race was rigged by Gasparde.
Abilities and Powers
As a fish-man, his physical strength is ten times that of a normal human and double that under water. Although seeing as he is the captain of pirate crew of Fish-Men and a rival of Arlong, he could be assumed to be stronger than the average fish-man.
He and his crew participated in the race with their ship, the Web Panic. He was last seen about to battle with Gasparde and his crew, but the outcome was never shown. He realized that Gasparde had rigged the race when he saw the former marine sailing away from the main course.
Willy's name and species may be a reference to the movie Free Willy, which starred an orca.
Though non-canon, Willy is the first fish-man whose base species is a mammal, as opposed to a fish or cephalopod.
Willy is said to be a rival of Arlong's. They both share the same Japanese voice actor and bounty reward.