Nintendo has survived as long as it has, through thick and thin, on the strength of its characters — a group of plumbers, princesses, puffballs and emotive animals who have persisted from console generation to console generation since the 1980s. In all this time, you think we’d know all there was to know about Mario and his friends, but the Mushroom Kingdom holds many secrets, as Console Wars author Blake J. Harris has recently uncovered. While researching for his book about the battle between Sega and Nintendo, Harris stumbled upon an ancient document known as the Nintendo Character Guide. This 1993 manual was apparently meant to be a guide for reproducing Nintendo characters without breaking any copyright laws, but it’s turned out to