caregiver!Eret headcanons!!
Primary caregiver to Fundy.
Universal babysitter. They're very good with kids and regressors, to the point where they're often called in to help out less experienced caregivers.
Very calm and chill caregiver.
He's very supportive and encouraging, and often gently encourages Fundy or whoever he's caring for to be reasonably self sufficient, both because it's good for their self esteem, and because he wants them to be used to being independent if they regress alone.
She makes toys for Fundy and other regressors, particularly stuffed animals.
They use their kingship to 'knight' regressors who like to pretend they're warriors and play-fight. The regressors that are the most fond of this game are Sapnap and Tommy.
He makes really good mac and cheese
They have a few playrooms in their castle. They have a few for different age ranges, and Fundy has his own.
One of her favorite games to play with littles is hide and seek. There have been a few times where she couldn't find the regressor she was playing with because her castle is so big, but it always works out.
Gives regressors the level of autonomy they desire. They know that regression doesn't reduce people down to being Actual Children, and respects the fact that regressors are still capable of at least some adult functions.