Cynder

Cynder is a dragon and the ring leader of the Villain League (now former). Her true form is a young teenage dragon like Spyro. Her Dark Form resembles an adult dragon. She is also known as Dark Cynder. her dark form is dubbed as Avatar Cynder, populerly refered as what is mentioned above.

Spyro the purple dragon and his friend Sparx once cured her of her darkness. Then the Villain League (a team composed of various villains) captured her and corrupted her again.

When this happened, Spyro hid from her. Then on Madagascar, Lord Cobra, adoptive Father of Cynder and Master Oogway's rogue kung fu student was killed when Shenzi the Hyena destroyed his medallion. From then on, Cynder vowed to avenge her adoptive Father by standing up to Shenzi. Then in Spongebob's later adventures, the Shell Louge Squad (this is the name of the team which they have formed from countless adventures) went on a search through many lands in search of Spyro. Then in SpongeBob and Friends Go on the Quest for Camelot, The Shell louge Squad found Spyro hiding in the Forbidden Forest outside of Camelot. There he explained why he was there. In Spongebob and Friends go on a Quest for Camelot, she resurrected Lord Cobra and After Sir Ruber was defeated by the ogre which the Shell Louge Squad found Excalibur. The Villain League soon began their conquest of Camelot. They easily slipped into Camelot by pretending that Lady Julianna was paying an unexpected visit. As soon as Kayley came out of the wagon and revealed that it was a trap, the Villain league attacked. When Spyro battled Cynder, he cured her of her darkness once again and the Villain League was left without their ring leader.

However, because Cynder was apparently the best leader the Villain League ever had, and Cobra intended her to be the ultamate empress of darkness, they refuse to let her out of their grasp so easily. They want to corrupt her......AGAIN!!!!! Don't bother why they want to keep having Dark Cynder as the leader over and over again. It's a recurring gag.

Trivia

 * Cynder joins Spongebob and Friends after she is cured of her darkness alongside Spyro and Sparx.
 * In Spongebob and friends and Alice in wonderland., Cynder unintentionally killed the Queen of Hearts. Now, she currently reigns as the Queen of Wonderland. However, this was not one of the things she intended to do. But if she killed the Queen of Hearts, she must assume the throne.