Ah Bronn you diamond in the rough. You appear from nowhere just another sellsword and see how quickly you rise on Tyrion's shoulders. Bronn is not just an excellent fighter. He is also amoral, self serving, and the ultimate pragmatist. He takes risks, but they are calculated ones. He's a thinking man with a sword and there is nothing more dangerous.
Please do not confuse Bronn with Bronies who are infinitely more weird and disturbing.