Seperation Au but the boys are all with Evil Mutant Dads and its not actually that bad their dads just really don't know how to parent in most cases and/or are in some shitty situations.
Timeline is a little different (as evident by ghost bear) because Lou and Baron pulled some bullshit (couple squabbles you get it). But they have a whole thing going on in the background.
I'm calling this the League of Single Father's AU even tho ghost wasn't in that lineup bc I find it amusing (and even tho at least 1 of them isn't single forever) (two are complicated (situationships amiright?))
Anyway I love them be nice to them because I sure won't be!
Broke: Casey Jr was raised by Cassandra + has the turtles for uncles/father figures
Woke: Casey Jr was raised by the whole of the resistance which would include former villains like Hypno-Potamus, Warren Stone, Repo Mantis, ect.
Hear me out, I just think it’s be hilarious if Casey Jr post movie is helping the turtles out on and pulls out some skill set the turtles assume was taught to him by one of them only to find out it’s one of their villains.
[Casey Jr hot wiring a car]
Donnie : Ah I see future me taught you a thing or two about car thievery! Splendid now we have a get away driver for any occasion.
Casey Jr: Oh, I mean Master Donatello taught me a lot, and I do mean a lot, but I got this trick from Mr.Repo! [goes back to hot wiring]
Donnie: heh???
[Casey Jr showing Leo a magic trick]
Leo: Oh wow, not even an apocalypse could stomp my love for magic! Greatest ninja and professional magician has a nice ring to it.
Casey Jr: Oh yeah, I loved learning magic tricks from you! Mr.Potamus even tried teaching me how to incorporate some of those moves in to battle. You see it’s all in simple slight of hands-
Leo doing a double take: I’m a need you to repeat that name for me.