Ya'll I just thought of a cute Monsterhaul trait!
Here me out!
Just imagine him minding his own business, then stopping because he found something shiny! The dark gleam of curiosity in his eyes would be adorable as he quickly investigates, but the germ freak within him would just pick it up, oh no. Can't have that. XD He pick it up with two sets of gloves or a handkerchief, disinfect it, clean it then examine it before deciding if he wanted to offer it to his beloved or not.
I know he hates clutter, but Crowhaul/Monsterhaul would hoard the prettiest and most shiny things somewhere in his giant ass closet!
Can you imagine the adorable blush on his face if his parter found it and would tease him!
"Oh, my god! kai, you are a messy little, dirty hoarder!?"
Him: "I don't know what you are talking about?" He tilts his chin up, high into the air. Trying to act aloof.
Mimic comes in. "hey boss I've found this thing you dropped."
His feathers ruffle and stand on end, signaling his irritation.
