The Chimera was one of the recurring antagonists in "Class of the Titans". one of the offspring of Echidna and Typhoeus, and is comprised of three animal parts: a lion, a snake and a goat. In mythology, the Chimera was defeated by Bellorophon, who shot it from the air while riding pegasus, to ensure that he was a safe distance from the Chimera's fire breath and venom.
The Chimera is seen as a lion with large ram like horns on the main, a goats head on its back and a red and yellow cobra as a tail.
In Class of the Titans
In Class of the Titans, Jay was poisoned by the Chimera when it was brought back by Cronus, and the other heroes rushed through the Underworld in hopes of finding the one thing that would be able to restore him.