Louisoix (Official Website Information)

[Anonymoose]

I keep telling you, man. He's become Odin!

90% of the reason I haven't signed on to this being in the top likely scenarios is that I'd be really disappointed if they Muu La Flaga'd him like that. I hold out hope that Odin's been hiding in the Shroud the entire time... but I don't discount the fact that Daybreak may be related to Zantetsuken. If Louisoix came to Eorzea looking for a sword, perhaps it is the one Odin wields (or, inversely, perhaps the blade he came looking for is the blade with which he as Odin could be stopped).

Either way, I'm thinking that the idea that he sacrificed himself for us and that's that might be a pipe dream at this point.

While I'm lending credence to your theory, here, not only did Lou resemble the historical Odin, but he was known as the "Allseer." Odin is traditionally known as the "Allfather."