Here's a robot I built from the ground up using a multitude of applications.
I was inspired by Bio Shock and had a great time coming up with the concept. I first started with doodles and notes then finished painted him up in Photoshop.
I modeled him in Maya with a tri count of around 10,000.
I used two 2k map to texture his face and body. I hand painted his diffuse maps and used the Nvidia Tools package to obtain my normal maps.