Ending the Matter! Whitebeard vs. The Blackbeard Pirates!

Blackbeard reveals that the entire reason he wanted to become one of the Seven Warlords of the Sea was to gain access to Impel Down, and that he gained entrance by having Laffitte hypnotize the Marines in control of the Gates of Justice to allow all Marine ships, which also enabled Luffy's ship to gain entry. Whitebeard attacks Blackbeard to avenge Thatch, whom Blackbeard had killed to get the Dark Dark Fruit. Blackbeard uses his Dark Dark powers to cancel out Whitebeard's Devil Fruit powers, but Whitebeard gains the upper hand, only to be attacked and mortally wounded by the rest of Blackbeard's crew. With his final words, Whitebeard tells Blackbeard that he will not be the one to find One Piece, and reveals that Ace may have died, but others with the Will of D have inherited Roger's will and confirms the existence of the "One Piece" in front of the Marines. As his crew mourns their captain, Whitebeard dies standing up, with hundreds of wounds on his body, but not a single one on his back.