Ho, je viens de lire un truc sur Wikipédia! O.O
"With the aid of a cheat device (such as GameShark), one can add Bahamut´s name to the in-game Summon list in the Disney/Square-Enix game Kingdom Hearts. However, if one selects his name on the list, the game will freeze. Because of this, it is believed by many that Bahamut was supposed to be a summonable character in Kingdom Hearts, but this idea was dropped, leaving Bahamut´s name in the game´s programming."
En gros, ça veut dire qu´à l´origine, il était peut être prévu que Bahamut soit une invoc de KH! oO´