Trident

The Trident was an ancient weapon. Ganondorf stole it from the pyramid in order to become more powerful, and the trident did just that; it filled him with dark power, morphing him into Ganon. The trident had several special abilities, including allowing the wielder to send beings to the Dark World at will. During the final battle, Ganon attempted to kill the Links using the trident, but he and the power of the trident were both defeated and sealed in the Four Sword during the battle with the Links and Princess Zelda. He used the trident in a similar manner to the way he used it in A Link to the Past. The trident he uses in that game is similar to the one in Four Swords Adventures, and may even be the same one.

Origin
It is explained in game that the trident was created by ancient people of great evil. Thus, the trident itself was filled with great evil. The people who created it are unknown; however, it was created in the desert area, so it's likely that the Zuna or Gerudo created it. Since the Zuna are noted as the descendants of the Pyramid's builders (where the Trident was stored), it is likely the Trident was created by the ancestors of the Zuna.

Appearances

 * The Legend of Zelda: Four Swords Adventures