Why does Jay from Ninjago have a scar? Jay, one of the protagonists of the Ninjago series, has a scar on his face. I would like someone to let me know what this is about.
According to the book, LEGO NINJAGO: The Visual Dictionary (Masters of Spinjitzu):


  Eyebrow notch caused by an explosion


The relevant page can be previewed on the Amazon page for the book: