Dark Demon King

The Dark Demon King is one of the two main primary antagonists of Super Mario Bros. X-2: Invasion of Sea Side and leader of the Shadowreds, also known as the first Shadowred born in the world. He is set to be the final boss of the game who King Varun and his companion must face.

Background
Currently, not much is known about the king. Thousands of years ago from an ancient era, the man was the king of the Ancient Kingdom. However, the man who sought for power embraced the darkness within his heart and turned into a demon, a Shadowred. He became the Demon King. But he was banished in a realm.

''Invasion of Sea Side
Thousands of years later, the Dark Demon King, along with his son, Darth came over to Sea Side and invade it.