Scott Shelby

Scott Shelby is one of the four playable characters in video game, Heavy Rain.

The Origami Killer revealed
Near the end, the Origami Killer as a child is revealed to be Scott himself. His real name is Scott Sheppard.

The reason he became the killer is because he has a bad childhood with an abusive father. One rainy night, while playing with his brother John in a construction site, he is trapped in a well, and Scott tries to get help from their father, but to no avail. His brother dies as a result.

Since then, he has moved from orphanages, and changes his last name from Sheppard to Shelby.

When Madison Paige comes to apartment to find Shaun Mars' location, Scott puts her into gunpoint and traps her in his closet in order to kill her in the explosion of his apartment. It depends if she escapes or not.

Death
Ethan Mars goes to a warehouse to save Shaun, but Scott appears and reveals that he is one of the witnesses who saw him sacrificing his life for Shaun. This is the reason why he became the Origami Killer, just to find a father who will give up his life for his own son. When Ethan demands Shaun to be released, Scott let him do it, but attempts to kill him so that his identity as the killer will be protected. Norman Jayden arrives and fights Scott in a conveyor belt. The fight results in the killer's death.