He was a boss that kept Dark Knight locked away from freedom. Alot have tried to kill him and failed. After their deaths, their heads remain on pikes as a sign to not mess with him. Dark Knight & Blippi decided to just go for it. There was a downside to this, he had help from Demon. He was only strong due to his sword. His death was being thrown in lava by Dark Knight. His skull was then discovered by Negative Mario, which can be a theory now as to why he wanted it. Perhaps it was used to make Dark Mario or Negative Luigi.