Gecko Moria is the captain of the Thriller Bark Pirates and a former member of the Seven Warlords of the Sea who resides on the largest ship in the world, Thriller Bark. His bounty is 320,000,000, which was frozen until he lost his Warlord position.

In his youth, Moria served as captain of the Gecko Pirates, until a vast majority of its members were killed in a fight against Kaidou of the Four Emperors. This traumatic event led Moria to seek power through an army of zombies, constructed by his subordinate, Dr. Hogback.

He is the primary antagonist of the Thriller Bark Saga who stole the shadows of Brook and various other beings with the power of the Kage Kage no Mi. He is also a major antagonist in the Marineford Arc where he took part in the Summit War of Marineford and sided with the Marines, along with most of the other Warlords.

After the war’s end, he was stripped of his title and was to be eliminated by Donquixote Doflamingo, but he managed to escape.