A lot of times when you are designing complicated things, it helps to break the mechanics down into smaller parts. Even though I have no idea how the hell this robot would work, if I can pick it apart and pretend I know what each gear, button, and switch does, it makes for a more complete looking design. So instead of just slapping in a wire here, or a wheel there, try to think about the function of each part of your robot. It will make your design look more realistic and clean.
This is a breakdown of the robot from Robot Muthafuckaz.
I did take a robotics class in college that helped me tremendously in understanding how basic mobility functions work. Our robot, of course, was not nearly this complicated. In fact, her only job was to fight other robots in the class. Her name was The Widow Maker, and if I recall correctly, she had 3 wheels and an arm she could use to slap other robots in their stupid robot faces. Although she has since been dismantled, she will always be my first robot love.