After Sanji, One Piece Lines Up Supreme King Haki For New Straw Hat

Conqueror’s Haki, also known as the Color of the Supreme King, is one of the strongest abilities to exist in the world of One Piece. Introduced properly in the series in One Piece chapter 597 on August 30, 2010, this ability is stated to be present within only one in a million people. As such, not everyone goes on to awaken this power.