In The Raid 2 there is a Killer couple. He uses a baseball and a bat, she wears sunglasses, has a destroyed eye, does not speak and uses hammers. Is there some more information about the characters? Is there an extended Version where their background is explained or did I miss something during the movie?
Are the characters also in other movies or movies planned for them or only invented for The Raid 2? Or maybe there is a book/comic or interview information about them which explain why she lost her eye, why they are working as killers and are in some kind of relationship? (At Wikipedia they say they are brother and sister, but I cannot remember a scene in the movie where this is stated.) Any information about this would be nice.