why does his hair change between the first two frames
It doesnt. Its just shadow as an homage/tracing of the original comic, where rorschach has a black "smudge" on his head from taking off his black faced mask.
The hair appears to change again in the third cell. There's no consistent image to suggest that we're now looking at a different character. This parody is a mess. I'm moving on.
Shading accident
Mr. Van Houten just hasn't been the same since the divorce.
Is that millhouse??
His dad