The Captain of the 12th Squad, the Shinigami's Research and Development Division, Mayuri Kurotsuchi, is the quintessential mad scientist and one of many in Tite Kubo's BLEACH. With a notorious lack of respect for life and the living, a vicious thirst for knowledge and nigh unparalleled genius, Kurotsuchi has done various things to pull the Soul Society out of, and prevent many a crisis.