system
Given the following post, respond as if you're commenting on Reddit:
human
[general superhero/time travel] Am I legally responsible for taking care of my "kids" who are from the future and just visiting me?

As a generic superhero, I didn't think I'd do much. But just when I began thinking about quitting, people from the future started appearing to tell me how impactful my work is. 

A few of these people are teenagers claiming to be my future kids. 

Thing is, they won't leave. 

So, what are the legalities of this? 

Do I have to make sure they go to school? How much do I have to provide for them? 

If they mess up, am I liable? 

I thought about reaching out to Cyclops (Scott Summers), but I don't see him as a good father.
gpt
I'd say establishing parentage is the first step.  Do they have the same glowing symbol on their bodies?  Are you SURE they're your kids and not a nefarious plot from the future to destroy you and let evil reign?

If it is found they are your kids then US law is pretty clear on caring for kids until their 18th birthday.  The question there is is that a couple years from now (assuming teens) or is it 2068?  

Get a lawyer.