Hii! I've requested from you before ( I requested yan superman and what he told lois and his parents about reader) but anyway, I had another idea for a one-shot to share if you don't mind! ( It's a bit of a marvel x DC thing)

Reader being the child of a villain and being saved by Batfam and/ or superfam and taken into their family. One day the justice league gets wind of some kind of interdimensional portal that opened up. Superfam / batfam shocked to see it's their darling child. Basically they come from a universe where they were never saved by their father and were raised by their bio villain parents. I could imagine superfam's darling being like Deadpool or being raised by someone like him (ignoring the fact he's from marvel). They swear a lot and have a crude and sarcastic sense of humor. Just the complete opposite from superman's version of his child.

For Batfam reader would be like Laura Kinney, and since they were never saved they ended up as a test subject for a secret organization trying to create mutant solders. They see reader following their father and not exactly know how to interact with people without trying to murder them. (Much like Laura Kinney in the movie Logan). They don't talk and once they've calmed down they are a sweet kid just damaged. Imagine batman's anger seeing Logan act so aggressive/ passive aggressive towards different reality! Reader.

It breaks both families hearts to see their child be so different due to all the pain they went through. Maybe the justice league uses their counterparts technology and their data base and they basically see what reader went through. All the intense testing that's basically torture ( if you're comfortable writing that) like the documentation of every experiment that reader went through. ( Maybe in their universe they didn't know the gravity of the whole situation and didn't see what happened they just knew that this kid needed help).

Anyways that's just what's been on my mind, thank you in advance if you do answer❤️ have a good day sirrr!!