When I was first starting in Starcraft II, I had a very loose idea of what the Zerg were. Having barely played the first game, I of course knew that Zerg were bugs on steroids and that they overwhelmed their opponents by sheer speed and numbers. The archetypical Zerg is the zergling, usually. It's what almost everyong thinks of first. Then, of course, they think of Hydralisks, Mutalisks, Brood Lords, Queens, etc. But does anyone's mind first think of Roaches?