• English / United States: Captain Crook
• Japanese / Japan: デボ
• Japanese (Romanized) / Japan: Debo
• Japanese (TL) / Japan: Debo

Captain Crook leads a group of pirates who poach Pokémon at sea even if they are not allowed to. His first mate, Scuz, keeps an eye out for any Pokémon on the horizon.

Captain Crook uses the ship's cannons to fire Pokéballs containing Tentacruel as well as normal Canonballs.

Ash Ketchum and Misty manage to capture Captain Crook and his crew and Officer Jenny arrested them. The Tentacruel belonging to Captain Crook were released into the wild.