Here is a robot design which I made with Blender for a contest some time ago.

The textures for the different body parts:
- Body (Color, ambient occlusion, normal) in 4K resolution
- Back (Color, ambient occlusion, normal) in 4K resolution
- Arms (Color, ambient occlusion, normal) in 4K resolution
- Hands (Color, ambient occlusion, normal) in 4K resolution
- Head (Color, ambient occlusion, normal) in 4K resolution
- Legs (Color, ambient occlusion, normal) in 4K resolution

Aimation:
- Run cycle

The fbx file and dea file contains the rig for the robot but it is better you animate everything in Blender and then export to the file as fbx or dae to your program, or you adjust the rig in you 3d-program.

The downloads also contains a little game project for the Blender Game Engine where you can control the robot .