ROTD bosses

Other than the few shots of Aboubo has there been any of info/pics on the bosses in this game?

PooF!
((Shinobi Vanish))

I hope its the shadow warrior from Double Dragon 2 on NES. Just thing how his stage would look. The first round could be in the best most kick ass NES stage ever!! The one with the Devil floating above the sky, that was just too cool. Then the 2nd and so rounds could be in that other room you fight in after beating his invisible form.

I hope the endboss is an evil Twin Tag Team like Tomax and Xamot from G.I.Joe.