Nadia

Nadia is a mermaid-like character from the 2006 unaired TV-series pilot Aquaman, portrayed by actress Adrianne Palicki.

Biography
Nadia is a snake-tailed siren, and has an ability to put suggestions to people's heads telepathically. She is able to take human form, and transform back at will.

Nadia attacked Atlanna's plane and dragged her back to Atlantis.

Years later, Nadia followed Gus Thompson who had escaped Atlantis, and followed him to land. Thompson lead Nadia to Arthur Curry/Orin. Nadia lured Arthur to water and transformed into her true form to attack him. She was interrupted by McCaffery, another exiled Atlantean and was shot with a harpoon. Nadia then tracked down Thompson and killed him. Nadia then returned for Arthur. She captured Arthur and McCaffery, and dragged them on a ship towards Atlantis to be executed. Artur and McCaffery worked together to escape their bonds, and killed Nadia. Nadia's body disintegrated after being killed.