I knew it! The guy in the black coat is the Master of Masters (Should be called the Grandmaster honestly). I cannot wait for Kingdom Hearts Chi (Back Cover) to show the mysteries surrounding the keyblade war, the origins of xehanort's keyblade and why it is special, the foretellers goals and motivations, the mysterious sixth apprentice, the traitor (if there is one), the Master of Masters purpose and other details which connects to the story of Kingdom Hearts 3.