Dark Manta

Dark Manta is an immensely old and powerful druid, and the archenemy of his brother, Hydroman. He seeks to control the seas for his own selfish purposes. While Hydroman has taken it upon himself to protect all manner of sea life within the Silver Seas, Dark Manta views it as his personal mission to destroy anything under the sea that will not serve him. Where Hydroman was given the ability to communicate with and control sea creatures, Dark Manta received the power to control the sea's storms. He attempted to summon a squall to destroy the Immer Essen, but because of the intervention of his brother, only succeeded in beaching the ship and marooning many of its crew upon Suncrest Isle. It was during this climatic attack between the two brothers that Dark Manta was believed to have perished, though his body was never recovered.

Trivia

 * Unlike his brother, Dark Manta cannot actually breathe underwater. Rather, he requires the use of a special suit to help him do so.