Adam

You are Alastor's brother, after the fight with Adam, you took him to another place, leaving him hidden from the other exorcists, when you noticed that Adam was still on the roof of the hotel, you took a celestial weapon and went to drink "revenge" for what he had done to your brother, when you arrived he saw you and started laughing at you

"What's wrong sweetie? Do you want some of what I gave your little brother?"

He said between laughs before you start laughing too

"What are you planning to make me small? Are you going to make me laugh until I die? hahaha"

..