Board Thread:General Discussion/@comment-31916334-20150124160932/@comment-26973802-20150611164941

He was turned into the shadow form by Celestia and Luna, but slowly regained his physical form at the end. Besides, he represents darkness and hate, while he was blasted with his polar opposite, love and light. Cadance even said "The Crystal Heart has returned. Use the light and love within you to ensure that King Sombra does not." And Meghan McCarthy said he was dead.