Hitman-for-hire Richard Kuklinski was given the nickname "Iceman" for his method of freezing a victim to mask the time of death. After his arrest he admitted to murdering over 200 people during his career.
"I killed 100 people when I was a young man before I even knew anybody too much. One part of my life I killed people for nothing. If someone looked at me wrong I would kill them by stabbing or shooting them. I use to shoot people up close and personal. I wanted to tell them just before they left, I wanted to say "Goodbye."