I haven't seen this anywhere and its been kind of bugging me...did they make a card of the Heartless that follows Ansem in all the games? I can't remember what it was called (might have just been Ansem's Shadow or something), but the point is it could have made a cool card. They could have given it an ability like Sephiroth's when its used in a challenge...
And if it is a card in Set 3 would someone please be kind enough to post a picute. Thanks!