During the Block D fight, he somehow managed to get inside the coliseum. He interrupted Bartolomeo and Luffy's conversation, and stated that Luffy would not get the Mera Mera no Mi. Bartolomeo responded with anger, telling Sabo that Luffy would be the future pirate king, to which Sabo responded that he knew that already. Later, Sabo was seen talking to Luffy, which caused Luffy to realize his identity. Luffy began to cry, and screamed out in surprise. After Luffy escaped, Sabo talked to Koala via Den Den Mushi, telling her of his meeting with Luffy. Koala told him that even if he had been at the Marineford war, he could not have changed anything. It was then revealed that Sabo had put on Luffy's former gladiator clothing, and had taken on the identify of Lucy. Sabo then told Koala to to inform him if any more news about the underground is found, and then said that he is going to get Ace's fruit back. Sabo then states that he must inherit Ace's will. Sabo was then shown walking towards the arena.