robot man concepts

Here are some concepts I did for the company I am working for .
2 or 3 hours each one , all in photoshop cs3

It was a commercial that would need a robot with a human head .
You can see that I tried different approaches here .
a clean and plastic look , a very tubular and messy , and a more soldier like .

Instead to try to illustrate the man's head , I just retouched a real photo .
btw , I used that lex luthor actor from smallville .

thanks for looking