The robot AI is amazing. You can start out very basic, and with simple drag and drop actions create some very complex behavior. This is one part of the game that takes some time getting used to, but is well worth it. No problem, just 'tell' the AI to do so. The end result is often some very intelligent looking behavior.
Mistakes can wind up being very comical, though.
Here are some screen shots of the robot creation process. I was a bit surprised. My from scratch designs are doing even better, now that I'm starting to get the hang of it. There are a huge variety of chassis types, components, energy sources, controllers, and weapons to choose from. One of the great strengths of this game is the freedom it allows you to have in expressing yourself.