I've been back on this forum for 10 minutes so far and I've already seen two "they were just following orders so they're not evil" posts.

What the heck? Nuremburg trials, anyone?

Kabuto chose to follow Oro. So even if the "he was just following orders" argument pans out, the fact remains that he chose to follow a decidedly evil dude.

But he's the man. Figuring out how his body worked after Tsunade put the whammy on him was classic. What a beast.