Arrow verse- Oliver’s brother

I think this would be a great story about how Oliver has a brother and gets stuck on the island with him.

Maybe instead of a bow, the brother uses a shield like captain America and a metal arm like the winter soldier. The brother could also get the super soldier serum from the submarine in season 2.

If you wanted to go super dark, maybe the brother cut off his arm so they had something to eat after so many days at sea.

I love the potential of shows like these and just like writing out my thoughts.