Poseidon

"They told us they got it away from Poseidon so no one could control them anymore."

- Mermaids on the Trident of Poseidon

Poseidon was a legendary sea god.

Biography
Poseidon was the brother of Zeus and Hades, and as such, one of the most powerful gods of ancient times. His most notable weapon was the magical Trident of Poseidon, with which he ruled the seas and oceans.

In unknown circumastances, Poseidon had gotten the clever god Hephaestus to create hundreds of giant enchanted gems, all different colors of the rainbow, with each color representing one of the different types of merfolk. Gathering them deep within Isla Sirena, Posideon created a magical link between the Trident and the gems, giving him the ultimate power over every mermaid, merman, and merchild on the Seven Seas. However, the ancestors of Morveren, Aquila, and Aquala managed to get the blue stones locked away in a special chamber designed by the goddess Calypso, making all blue-tailed mermaids immune to the Trident's charms.

At some point in his life, Poseidon fell in love with the godess Amphitrite. Together, they conceived a son, whom Poseidon named Triton.

Appearances
Pirates of the Caribbean: Jack Sparrow: Bold New Horizons