Monkey D. Luffy died in the battle of Marineford when his brother Ace died in his arms. Luffy lost the will to live and abandoned his dreams to become King of a pirate. But his spirit yearns for revenge and made a deal with an old evil that once plagued the seas to help him on his new life vengence. Dark True Pirate Luffy.

When a boy in the North Blue took a stand against the world nobles, he was chosen to become the new Overlord. Now he's on a mission to conquer the North Blue and put an end to the world government. This will be heavy on OCs and will contain harem and lemons.

From boy to slave: Luffy was enslaved at a young age. From slave to killer: Luffy made his first kill, and he liked it. From killer to fugitive: Luffy's fate is sealed. From Fugitive to pirate: Luffy sails the seas after his freedom. From pirate to Overlord: Evil Always find a way. Evil Overlord Luffy, harem.

Another Luffy eats a different devil fruit but this take has Luffy becoming slightly more sinister as the story progresses.

Story 2: The Fourth Overlord is plauged by the shadow of his mighty father, and is left with no other recourse than to go beyond. A world of gold and glory is ripe for conquest, for the one that is willing to take it.

The Overlord was sent across dimensions to retrieve specimens of a fruit thing. Next thing he knew, he slammed headfirst into a pirate ship.