Quote Originally Posted by TheMightyMollusk View Post
Omega hasn't thrown anything at us that we've fought before so far. Midgardsormr just doesn't fit the pattern.

Also, that just....doesn't look anything like him anyway. Midgardsormr's full body is limbless aside from wings (and also enormous, but that's easily handwaved, as with Bahamut and Alexander). The dragon in the trailer has legs.
First off, Halicarnassus was a repeat boss in the sense that the name was the same, but the form was different.
Second, are you forgetting that Middy has his minion and mount forms as well? Those both have wings and four legs.