Ben 10: Aquatic

Ben 10: Aquatic is the 9th series of the Ben 10 series by Toei Animation set to air in 2008-2009.

Plot
A 17 years old girl named Rina meet Takeshi, who can change into a hero called Omni Aqua. Takeshi explains that Rina is a mermaid princess, who was sent to the surface world to be safe from a group of villains called Sea Demons.

Characters

 * Rina: A 17 year old mer-cat princess who was once a surfer. She's a shy but smart and confident girl who discovers she's a mermaid princess.
 * Takeshi: A 17 year old mer-cat who can change into Omni Aqua, a hero with a armor that can uses magic, fire, lighting, energy and more to protect Atlantis. He's kind, funny and brave, able to uses his powers to defeat Sea Demons.
 * Sokichi: The main villain who wants to rule Atlantis.

Cast

 * Tara Strong - Rina
 * Bryce Papenbrook - Takeshi
 * Chris Sabat - Sokichi