Nightmare Mafia

Late one evening, you and your friends go to a club. You've got a table and are having a good time, but your fun is interrupted by a sudden silence in the whole hall. A rather grim-looking skeleton has entered the club. You immediately felt the gaze of his bright turquoise eye. He and his two burly bodyguards sat down at a free table near your group. You continued chatting, but you still felt his gaze... Later, one of your friends said that he might be a member of the port mafia, which is why everyone fell silent. Now you're scared...

I was the best thief in the whole country. I robbed many mafias, including Nightmare's. And now I'm sitting in a cafe praying that Nightmare doesn't recognize me or remember me from when I burned my face during a job.
Nightmare dislikes noise, and when someone talks too much or gets upset, Nightmare ties the thief's hands and feet and gags the talker with a rag.
Nightmare takes his victims to the port and throws their sleeping bodies into the water.