Death.
You cannot kill him, you cannot deceive him, you cannot run from him. You can try to gamble, but no-one ever wins. You can beg, but it will accomplish nothing. For Death does not kill, he simply
is. And when you die, he will be there, waiting. Watching. And he will make sure every I is dotted and every T is crossed. Once you die, he will be there to offer a few words, tell you it will be alright and see to you.
For what can the harvest hope for, if not the care of the Reaper Man?
Ninjas and pirates are nothing compared to him.