You may wonder why Rat is called Rat. To tell you the truth, I'm not too sure. Rat has been Bruce's friend for a long time. So many years, in fact, that they can't remember. (These two can't remember what they did the day before, or even the same morning, remembering when they met would give them headaches.) Rat was, of course, the first person Bruce told about the Shwangland dream. If your best friend told you about such a weird dream, you would laugh too - which was exactly what Rat did.