User blog comment:AdrianC385/Villains that should be added as Pure Evil/@comment-29644557-20180321032754/@comment-29644557-20180323210347

Well, as for The Nightmare Before Christmas, the only things not canon are the Kingdom Hearts games and the characters' times at The Haunted Mansion. The Nightmare Before Christmas: The Pumpkin King is the only prequel, The Nightmare Before Christmas is the only film, and Oogie Boogie's Revenge is the only sequel. I believe there will be an official Nightmare Before christmas sequel in the form of a manga series, but it will presumably take place after the events of Oogie Boogie's Revenge.