[ Mephisto figures it's fine if he's rude in another language! What's the harm! (There's a lot of harm.) ]

Hmm... alright then. I suppose apologies are in order~! Not as though it's possible for someone like little ol' me to kill someone, [ Liar ] but I do apologize for the threat of it, all the same. My name is Mephisto! And you are?