POV in a combat robot

What makes a combat robot more badass? Having it spell words or patterns in the air on its blades, Trebor the Mad Overlord writes – “More than a few people have mused upon the idea of installing lights inside the weapon of a combat robot. Similar “Persistance of Vision” setups are available for bikes and car wheels, but of course, doing it with a robot is kicking it up a notch! I’ve thought for some time that it would be fun to see what could be done with easily available materials, but never had the time to get around to it — until now! “ – Link.