The following characters are given as having 5/5 intelligence in Databooks 1-3: Chiyo, Hiruzen, Itachi, Kabuto, Kakashi (he has 4.5 in the 1st databook and is upgraded to 5 for the 2nd and 3rd editions), Orochimaru, Sasori, Shikamaru, and Tsunade. As per the original question which...