Alias used by Kudou Shinichi in his shrunken form. Shinichi took the appearance of his six year old self after being exposed to a prototype poison called APTX 4869 which he had been forced to swallow by two men in black later revealed to be members of the Kuro No Soshiki. The poison deaged Shinichi's entire body except for his nervous system and therefore he still has the personality, memories, and incredible deductive ability of his teenage self.