Chernabog

Chernabog is the true dark lord of all evil who is the mastermind behind Bowser and Mistress 9's schemes. He's also the creator of the Dark Spawn breatheren and the Heartless. He briefly appeared in Winnie the Pooh in Fantasmic, pretending to be a mindless grunt of Bowser, Plankton, and Emperor Zurg. He was destroyed alongside the other villains during the finale.