well... the third may walk like a woman and have hips like a man, but his armor is similar to the first who is obviously a man. I think they're bad guys. maybe they killed all the others. their armor kinda looks evil, like sauron's in LotR. and who's the silhouette towards the ending? why does the 2nd knight have a dragon-like keyblade while the other two have what look to be kingdom keys? Do all the keyblades signify hundreds of worlds (not just disney worlds?!)