Discord is the antagonist featured in The Return of Harmony Part 1 and Part 2. In the episode, Princess Celestia explains that before their rule over Equestria, she and her sister had imprisoned him in stone using the Elements of Harmony, but now that the sisters are no longer connected to the elements, the spell has been broken. Discord breaks free of the spell and sends Twilight Sparkle and her friends in a quest after the missing Elements of Harmony. The ponies venture off to retrieve the Elements of Harmony in order to stop him.
The word "draconequus" is composed of the Latin "draco" and "equus", meaning "dragon-horse". Discord is a combination of many body parts from different creatures. His head is horse-like, much different from the other character's head styles, with a deer antler on the right, a goat horn on the left, one long fang, different-sized pupils, a snake tongue, and a goat beard. He has the right arm of a lion, the left claw of an eagle, the right leg of a lizard, and the left leg of a goat. In addition, he has a bat's right wing, a Pegasus' left wing, a horse's mane and a dragon's tail with a white tail tuft. The shape of his body resembles that of a snake. While Discord is technically a chimera, which is a creature with parts from multiple animals, this term is not used in the show.