Arc 4Alabasta and Impel Down
Bai Yu built his Marine following with a Haki-awakening method, then captured Crocodile in Alabasta and exposed his plot to seize the kingdom. After delivering Crocodile to Impel Down, Bai Yu confronted the prison’s notorious sixth-level inmates, where his Conqueror’s Haki drew comparisons to Rocks.
- Teach learned Bai Yu had the Dark-Dark Fruit and hoped he would die, while Kaido, Shanks, and Big Mom reacted to the new Admiral’s rise.
- Bai Yu used a gravity training room to help Marines awaken Haki, drawing thousands to his plaza and gaining Sengoku’s support for his promotion and mission to collect Alabasta’s tribute.
- Bai Yu killed Miss Valentine and Mr. 5, defeated Pell and Chaka, and agreed with Vivi to let Baroque Works take the tribute so the Marines could catch Crocodile in the act.
- Bai Yu found Crocodile at Rainbase, suppressed his Devil Fruit with Dark Moon, defeated him, and took him into Marine custody.
- Bai Yu returned to Marine Headquarters with Crocodile and documents linking him to a plot to find Pluton, while Sengoku assigned Bai Yu to escort Crocodile to Impel Down and invite new Shichibukai candidates.
- Bai Yu delivered Crocodile to Magellan at Impel Down, bought Advanced Armament Haki and Top-Tier Conqueror’s Haki, and entered the sixth level with his companions.
- Bai Yu overwhelmed Bullet in a clash of Conqueror’s Haki, then combined his Haki with spiritual pressure and killing intent to send Bullet crashing into a wall.
- The Red Count compared Bai Yu to Rocks and asked how Bai Yu knew about God Valley and where he came from.