Trident

The Trident is one of Ganon's weapons. He is seen wielding it in Four Swords Adventures, A Link to the Past, Ancient Stone Tablets and the Oracle Series.

In Four Swords Adventures, the Trident is held in the Pyramid level, and has an inscription nearby: "To ruin the world, become the King of Darkness, with the spirt of darkness'trident"   The inscription would mean that the trident is the exact opposite of the Master sword. The Master sword being the ultimate light weapon while the trident is the ultimate dark weapon.

Phantom Ganon in Ocarina of Time is also seen wielding this trident.