I think Krishna is the oddly sickly-looking blue guy towards the end of the gallery.

That's my suspicion, too. Which I think would make him the guy with the spiky armor and the halo in the black-and-white art. Mmmm. Looks a little... badass? His face looks too gaunt. I mean, Krishna is badass, but I also have trouble imagining him without a more feminine, baby face.