So in GTA 5 there is a book in Franklins house called Red Dead by J. Marston. It kinda made me think what if Red Harlow is the protagonist of the book and Red Dead Revolver’s story is the book. Like maybe Red Harlow is based on John and that’s why they have similar scars. If there’s evidence against this please provide it in the comments (btw the stories about Red Harlow in game are known in game so that’s my only evidence against it)