Hey, your stuff is good
About the first one:
The leg that's far back has some risque rendering
I mean, it's obvious that the width is inconsistent (I believe you did it on purpose), but still I think it might not be working out. So I'd be more conservative and keep the two-pixel width from the knobby part up.
The leftmost leg also gets a bit fatter near the foot (for 2 or 3 pixels), I'd slim that out a bit.
To make the person more readable, you'll have to have them stretch out both their arms and legs (and maybe head too). Even if that means sacrificing the size ratio, or the original pose.
Finally, I don't know what the robot is doing with his left hand
An edit (I admit I didn't understand how bad the guy was being crushed):
About the other robot dude:
Unless that was your intention (as it is a robot), the feet are unnaturally spread out.
And, the two round-bright-gem things on his pecs are sort of weird, I think...
I hope I helped
(edit: Oh shit, the second one was reference
Well, I'll leave my post as it is, anyway
)
