I understand why everyone thinks Sif and Bill and Bull are the best bosses in the game...
But clearly, GAF doesn't appreciate magic when it's being spoon-fed to ya
The best boss in the game is called Moonlight Butterfly. Best music, best atmosphere, crazy amazing design and overall a whole bunch of "THIS GAME IS OMG!".
Upon beating it, I was considering posting just a whole page of spam (as I was so damn hyped afterwards). Luckily, my brain realized that it would probably get me banned so I skipped doing that