As we do pull back, we see BRANDON, 25, the same guy from the
photo on the work bench, aged three years, sitting on a chair
just outside the door. Out of sight from Cherry. Brandon is
wearing a mechanic’s uniform and looks saddened by what has
happened to his sister.

Brandon, while being Cherry’s brother, is everything she is not. She’s reckless, he’s very conservative.  She’s spontaneous, he plans things out.  When she wants revenge, he’s the one trying to talk her out of it.  But when he sees there’s nothing he can do to stop her, he becomes the perfect compliment to her quest.  Donning the blue collar to portray Brandon is John Gabriel:

Welcome aboard, John!  You’ve got quite the task ahead of you trying to keep Julin’s character Cherry in line…