Discord is a previous significant adversary in My Little Pony: Friendship is Magic, also known as the Spirit of Chaos and Disharmony. Discord disguised himself as Grogar in Season 9 and served as the season's "primary adversary" until his deceit was uncovered towards the series end. He has not appeared since but is expected to return sometime in the future. Discord was once a powerful spirit who used to fight on the side of harmony until he was banished from Equestria for trying to destroy everything. To escape this fate, he decided to go into hiding. However, after getting old and sick of waiting for something to happen, he decided to return to chaos again. Using his magic and cunning, he managed to fool Grogar into bringing him back so he could start fighting against harmony again. During his time away from Equestria, Discord learned how to corrupt other spirits by taking control of their bodies so he can fight for evil. He has been shown to possess dragons, trolls, zombies, and many other creatures who will do his bidding in order to get revenge on Princess Celestia and Master Shredder for exiling him long ago. Despite being a former ally of harmony, Discord has also taken advantage of situations where destruction is needed to cause chaos and disorder. For example, he caused havoc during the first half of Season 9 before being defeated by Princess Celestia and then banished back to limbo using magic.