In the series' narrative, Kramer is a former civil engineer dying from an inoperable frontal lobe tumor that had developed from colon cancer. After a failed suicide attempt, Kramer found a new appreciation for his life, and decided to dedicate the rest of his life to inspiring the same appreciation in others by testing their will to live. His methods include forcing his subjects through deadly scenarios, which he referred to as "games" or "tests", in which they were forced to inflict pain upon themselves or others in order to escape. These tests were typically symbolic of what Jigsaw perceived as a flaw in each person's moral character or life. The Jigsaw name was given to him by the media for his practice of cutting a puzzle piece shape of flesh from those who fail.