The Legend of Rio

The Legend of Rio is an upcoming American animated television series that will premiere on the Nickelodeon television network in the fall of 2013. The series is sequel to The Legend of Korra which aired on the same network from 2012 to 2013 and is a sequel to Avatar: The Last Airbender which also aired on the same network from 2005 to 2008. A total of 26 episodes have been order for the series so far which will be split in to two season, each consisting of 13 episodes.

Plot
The Legend of Rio takes place 150 years after The Legend of Korra, where a a 16 year old firebender named Rio discovers that he is the next Avatar and sets out on a journey with his brother Denzil to master the other elements and along his journey he will encounter a new enemy with the power to bend all four elements named Rava.

Cast
These actors have been confirmed to be voicing characters in the series, but their roles have not yet been confirmed:
 * Rio (Cameron Bowen) is the series's protagonist and Katso's successor as the Avatar. He is a 16-year-old from the fire nation. He has already mastered earth, fire and air but is struggling to learn waterbending and searches for a suitable teacher within the United Islands.
 * Denzil (TBA) is a blue firebender and Rio's older brother. He is a 17-year-old also from the fire nation. He lived with his brother and their grandfather, firelord Rohan in the fire nation capital before travelling to the United Islands to find a waterbeing master for Rio.
 * Sonnia (Alyson Stoner) is a non-bender living in the United Islands with her aunt and uncle. She is a 17-year-old warrioress who uses sai weapons in battle. She is also Rio's love interest.
 * Tembo (Jesse McCartney) is a waterbender from the northen water tribe who escapes to the United Islands after being chased down by Rava's forces for leading a rebelion against Rava. He is an 18-year-old and the current leader of the new team Avatar.
 * Rava (TBA) is the mysterious main antagonist of the series who beholds that same abilities as the Avatar in being able to bend all four elements. He has also invented a new way of bending named mindbending which allows him to turn people into his pawns.
 * (TBA) is one of Rava's three top genersls and a firebender.
 * (TBA) is one of Rava's three top generals and a earthbender.
 * (TBA) is one of Rava's three top generals and a waterbender.
 * Firelord Rohan (TBA) is the ruler of the fire nation and grandfather of the new Avatar Rio and his brother Denzil. He is also the grandson of General Iroh and was named after Tenzin's youngest son Rohan who was Katso's airbending master.
 * Katso (TBA) is Rio's preceding Avatar who was born in Republic City. He often appears as a spirit when Rio meditates and gives Rio advice.
 * Korra (TBA)
 * Aang (D. B. Sweeney)
 * Mae Witman
 * Roger Craig Smith
 * D. B. Sweeney