Looking good man. But to me while your first character is all proportioned correctly the second characters head looks abnormally large for his body? Unless this was supposed to seam that way.

It was meant to be kinda chibi.

It reminds me of the first Sigma form from MegaMan X6. He was a giant floating head...

Looks cool, and I can't wait too see it finished.

I was hoping for House M.D.

Ah well, great job.

I worked mostly on the anatomy, still fixing up the hair. I think the chest is better (I pretty much completely redid it). Any better?

The boobs still need some more poof to them. They look very constricted in that supertight suit. make them a little bit more big and round.
Here's my rough edit of how I think you should try making them

Maybe the left's (our left) bottom arch could be slightly moved up, but you know, I haven't slept in three damn days, so stuff happens to ya.. @_@