Isaac

Isaac is the main antagonist of the game One Piece: World Seeker. He is the prison warden on the World Government-affiliated Jail Island and a scientist who serves as the island's highest ranking Marine officer.

Appearance
Isaac is an average-sized man with wild blue hair and black, horn-shaped tattoos over his eyes. He wears a black buttoned shirt over a green shirt and orange tie, as well as black pants. He also wears a white lab coat and a brown high-collared coat. He appears to have robotic hands.

Cyborg Enhancements
Isaac is a cyborg with cybernetic enhancements on his arms and legs. Thanks to these, he possesses tremendous physical strength and speed, being able to overpower Luffy with his blows. He is capable of blasting his hands away, allowing him to attack people from a distance with them. He can also electrify his cybernetic attachments, similar to Electro. His cyborg arms are made of Seastone which grants him a huge advantage over Devil Fruit users.

Isaac has significant authority and power, as shown when Smoker is shown to be subordinate to him while he is on Jail Island, referring to him as his superior and even ending his fight with Luffy because he is called back by Isaac.

Past
Isaac was born the son of Jewel Island's former leader. After his mother passed away, he decided to join the Marines, where he rose through the ranks. Eventually, he was promoted to the position of warden and returned to Jewel Island to take command.

Trivia

 * The short biography of Isaac that was released before the game stated that he is a former Marine. However, within the game itself, Rosa, a Pro-Marine civilian in the game mentions that Isaac is the highest ranking Marine officer on Jail Island.

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