Kaishakunin
The guy who cuts off the head of some poor fool who decided to commit suicide with a sword. He uses a fancy blade called a Dotanuki, which is basically the samurai version of a chainsaw.
The kaishakunin walked in like he owned the place and sliced the guy’s head off before he even finished his speech.
That kaishakunin looked like he could cut through steel with his bare hands. Poor fool didn’t even get to finish his last words.
The kaishakunin didn’t even flinch when he chopped the guy’s head clean off. Just like that. No mercy. No fun.