In One Piece, Donquixote Doflamingo blackmails the Celestial Dragons using a powerful secret: knowledge of the “National Treasure” of Mariejois.
- The Secret: Doflamingo knows about a hidden treasure or weapon in Mariejois, the holy land of the Celestial Dragons.
- Leverage: This information gives him immense power, as its exposure could destabilize the World Government.
- His Demand: In exchange for silence, he retains his Warlord status and operates freely.
This secret is a key part of Doflamingo’s control over the World Government, making him one of the most dangerous figures in the series.