I see a lot of headcanon that, while back on Sylvain, working as the court seer, Indrid carried himself with all the grace and regality that is expected of everyone on the court. That t was all the trauma, and years spent alone on Earth that slowly deteriorated into the madman that lives alone in a camper surrounded by ancient nog and all the futures he wouldnt be sharing with anyone.
BUT
What if hes just, always been like that? What if he was just known for showing up 20 minutes late to every court meeting with jam on his robes and in his hair and no one expected any different because everyone accepted that Indrid Cold was just like that.