Walter Freeman was an American neurologist who went on to become a notorious physician for his craze about lobotomy. Rather than a brutal intent, Freeman was driven by the passion to perfect the technique, which is outdated now, doing over 20 lobotomies in a single day. He frequently allowed media to witness his practice as well. He has done lobotomy on around 3,500 patients. He was later banned from practice following the deaths of a number of patients.