So as u know (or dont) Bahamut is (obviously) in The Binding Coil of Bahamut raid/dungeon/othername you want to call it. Whats interesting however is in the FF14 video where Bahamut breaks out and Louisoix tries to seal him in a new box. You think this attempt fails if you've seen the video BUT just as Bahamut looks sealed and before the thing closes up (only for it to dramatically fail) Bahamut seems to have multiple COILS surrounding him looking as if they'll restrain him inside the stone prison. Now look at the name of Bahamut's current "home". I guess Louisoix's attempt didnt fail after all, or at least not in its entirety.