Updated design idea, originally part of my Rob & Big submission. I omitted the girl and wrapped the dolly around, hope you enjoy :)

I like the idea, but the colors are a little too diverse (maybe take away a few for more visual impact), and the crotch area of the muscle layer looks a bit odd. Good concept, though, it reminds me of a weird German children's toy design. Keep it up!

i like

i would buy it but i agree with jenkins about the weird crotch

Cute design, but something about the boy's lungs being brown just bothers me. Its like he has cancer from smoking for 40 years or something. I don't know. It might just be me.

I would use a simpler color palette, but I do like the idea a lot.

cute, but disturbing...
take the advice into account.

i'm a bit thrown off by there being a face on the muscle body on the back (it is facing forward), and then no face on the fully clothed kid (it is facing backward). the faces on the back should be consistent.