Suggest me books with a male MC who is badass, cunning and ruthless

I'm craving to read a book with a male MC who is:

1. Smart and cunning
2. Ruthless
3. A gentleman but he doesn't just offer his respect to anyone, but only to those who have earned it
4. Strong and capable
5. Has a lot of badass moments and dialogues

Someone like Thomas Shelby from Peaky Blinders or Hannibal Lecter from Hannibal TV show (without the cannibal part of course) . I don't mind the setting, it could be contemporary, historical or even fantasy, as long as the MMC is a human