Show about an absolute bad ass.

Hello people. I will be grateful for recommendations about shows where the main character is the best or one of the best in their field, and that is a fact universally accepted by everyone. Please exclude medicine shows. But suggestions about other careers, preferably adrenaline raising, are what I am searching for. I already watched (or discarded because for some reason they were not for me) shows like Reacher, Sherlock, Elementary, CSI, criminal minds, Suits and Bones. And Buffy too. Thanks in advance for your time and suggestions.