AncientMermaidmon

AncientMermaimon, from the Digimon Frontier series, is an Ancient Sea Beast Digimon with the power over water. The power AncientMermaimon possessed lives on in the Digimon that became Ranamon via the Spirits of Water created by AncientMermaimon.

Abilities
She wields a golden three-point trident and can manipulate the waters of the Net Ocean to her will.

Attacks

 * Great Maelstrom: Creates a huge whirlpool that captures enemies in the water.
 * Crystal Pillow: Creates frozen water bullets that she fires like a machine gun.
 * Ocean Waves: Waves come and smash her enemy until they drowned.

Digimon Frontier
She was one of the Ten Ancient Warriors that saved the ancient Digital World from Lucemon's treachery.