User blog comment:VillainNut/PE Proposal: King Sombra from My Little Pony: Friendship is Magic/@comment-26323420-20200218124817

I would have to say, yes. He is an evil tyrant and a former ruler of Crystal Empire from thousand years ago, until Celestia and Luna defeated him by turning him into shadow. Thousands of years later, he returned to Crystal Empire to reconquer it so he can use his power to conquer all of Equestria with the help of brainwashed Crystal ponies. However, he is defeated by Princess Cadance, Spike, and Crystal Ponies using Crystal Heart.

Later in season 9, King Sombra was resurrected by "Grogar" so they can defeat the Mane 6 and conquer Equestria. But Sombra refuse to join them and never accept his idea, claiming that he will conquer on his own, boasting that he is the most powerful creature in Equestria that no one can defeat him again. However, despite Sombra destroying the Tree and Elements of Harmony and later conquered both Ponyville and Canterlot, his overconfidence and ego makes him being destroyed by Mane 6's power of friendship.