This is gonna be a long post...
Drew my oc in @pestorik's Twst x Adventure time Au they're a runaway Demon Princess from another world (like the Nightosphere in adventure time.) I've also noticed i haven't posted a lot about their lore regularly, but I did try to base it on their normal lore.
Yu eventually runs away and after being essentially homeless for a little bit, they settle down and start a business moving ghost souls into human bodies. After awhile a kingdom starts around them that consist of the saved souls and they are eventually known as "the Spirit Queen".
Based on what i've read, I'm assuming the characters are aged up to be more young adult and above. So, grim is Yu's childs in this au. He used to be human but something happened, he died and Yu had to put their soul into a cat's. After someone dies, they don't remember who they are. Grim does not remember their mother and always believes that that Yu was a temporary arrangement, and a "Henchmen". This leads to him thinking that he'll be kicked out when he's not useful anymore. He still has his love of magic, which Yu teaches him how to do.
Think Reverse Simon and Marceline.
Lay outs of the house, including the frankenstein esk main lab in the back. Grim sleeps in one of those window beds.
Both have very similar "monster forms" the little dots are people. The Ramshackle ghosts are loyal guards that practically raised Yu, and followed them out to Ooo? (is it still Ooo in the Au?) and became resident in the kingdom.
I'd think that grim latches onto Adeuce and Yu follows to watch Grim. they join in on most of their adventures. (Like in regular Twst) but are not always there. Maybe an ep about Ace getting kicked fed up with Riddle and trying to move in with Yu and grim and Deuce following suit.
Introductory Episode, Adeuce has to take Care of Riddle's royal rose bush, and end up killing it. After advice from trey they find out about the Scary Necromancer, and deiced to ask for help.
The Reveal of Grim's life as Yu's son, his death, and his Reincarnation.
A flashback to Yu's initial runaway, and they're Temporary work at Monstro Lounge.
It would be really funny if the Garden kingdom Peoples all looked like fruits that sprouted legs when they were young. (This would also imply that Trey does child labor, because that's also just what the citizen's look like.) It would also be funny if Epel had a secondary door so he didn't have to reach as high, and when he leaves Vil gets a little saddened because there's always a reminder of him there. Epel's hat gets knocked off every time he enters. He curses, get into trouble, says he'll remember to hold onto it, and it gets knocked off again.
I will be making more of these, Especially going into Yu's relationship with Riddle and Idia. Jade and Yu go on occasional Hikes.
















