|First Appearance:||"The Return of Nepto"|
|Created by:||Bob Haney|
|Portrayed by:||Ted Knight|
The tyrant Nepto was once ruler of the seas and of Atlantis.
Nepto's terrible reign came to an end when an earthquake trapped him and his men in a cavern. There, they slept in some kind of suspended animation for centuries until a violent storm created an opening to the cavern.
Once discovered by Aquaman and Aqualad, the tyrant and his men awoke and attempted to take control of Atlantis. Aquaman was able to summon a great army of fish to help him capture Nepto and his men. They were then taken to an Atlantean prison.