Hmm....
Im a fan of listing crap so, lets start this thing:
5.-Fraaz:
Love his music reference, how he is a mash-up of bosses from previous games(that fire dude from the Temple of Fire in PH and Jalhalla from WW), and that, well, he looks funny, ok!? YES! I CHOSE HIM BECAUSE OF THAT!
4.-Cragma:
What the heck is wrong with this? Using an item you don't even have or can have in your inventory is awesome!
3.-Byrne:
I think its self-explanatory...
2.-Demon train & Puppet Zelda:
I love having another boss fight on train that isnt a play on Ghoma and irritating as hell, this boss is actually original in a way that you dont really know what to shoot... at first. You just use the cannon because its the only train weapon, but its awesome to fight it and within the time limit. Puppet Zelda is included, because its not a boss by itself, since its just shoot an arrow at Zelda while you avoid Cole.
1.-Malladus:
By far one of the easiest, if not the EASIEST boss in THE ENTIRE ZELDA FRANCHISE, but the epicness of this battle is unmatched in this game, its a perfect final battle, though i would have prefered to battle Cole, the music in this battle is... i dont know how to even describe this moment in the game.