Who is the origami killer in heavy rain?

The origami killer is Scott shelby his brother died in water when his foot was stuck and his father would not help save him because he was drunk so he kept on kidnapping litle boys until he found someone who would risk his life to save there own son. True but when you say Norman jayden killed him and shaun was saved is wrong. The game has multiple endings and outcomes. Shaun might die or Norman might never meet Scott because he died there are a LOT of endings and outcomes.