The Morningstars but as an Incredibles style superhero family where Lilith and Lucifer start dating Alastor and they all have to hide their identities but they just suck really bad at hiding their powers
I was thinking that Lucifer could have the power to shapeshift and in the safety of his own home he likes to turn into different animals and curl up and fall asleep in random places
So Alastor will come over and there will just be some type of animal on the couch and Lilith and Charlie have to say that Lucifer is their pet
Alastor: I haven't seen any kind of cage or enclosure or cage for your snake and bird...
Lilith: They're free range
Alastor: I haven't seen a litter box for the cat either
Charlie: We trained him to use the toilet
Alastor: I haven't seen any pet food anywhere
Lucifer: They eat dinner at the table with us
Alastor: I don't see any toys for them don't pets need enrichment?
Lilith: You're so right we're terrible pet owners we'll give them all away
Alastor wonders how long this type of thing will go on until they finally break and tell him the truth
I think all their superhero friends (I assume the Sins are their friends and fellow heroes) know that Alastor knows, and have a bet going on as to how obvious Alastor can be about knowing before the Morningstars figure it out. The problem is everyone is betting that he could tell Lucifer to his face that Al knows he's a shape shifter and Lucifer would panic and think Al was referencing some mundane non powered thing
The Mornigstars introduce the sins to Alastor and they're all shocked that they told their fairly new boyfriend about their powers. So after Alastor leaves they sit Lucifer and Lilith down because Alastor knowing that they have powers is extremely dangerous why the hell would they do that
Lucifer and Lilith just kind of stare at them like ??? We didn't tell him ??? He doesn't know ??? What are you talking about ???
And the sins just look at each other and the second Lucifer and Lilith are out of sight they start the betting pools
What is gonna have to happen for Lucilith to realize that Alastor knows? Cuz I feel like they are so deep in denial right now that he could go up to their superhero personas, unmask them, call them by both their superhero and real names in the same sentence, and at least Lucifer is able to justify it away? Also, does Alastor have powers in the verse? Or maybe no powers but he uses magic and just never elaborates that it isn't superpowers?
Lucifer and Lilith are going to PANIC when they find out.
In this universe superheroes have become illegal. A lot of them were arrested when this law passed but most of them (including Lucifer and Lilith) went into hiding. If anyone finds out about their powers they could be arrested or worse.
They're mostly worried about Charlie who was born after the law had passed and has powers that she can never use even though she so badly wants to be a superhero like her parents used to be.
They love Alastor but this is their daughter's life they're talking about and they do not like that Alastor's holding it in his hands.
I do think at one point they're going to have to address it even if they don't want to out of fear. Either Alastor finally brings it up or he's standing RIGHT there as they're using their powers. Lucifer will try to play it off but Lilith will finally let herself admit that they're not as safe as she'd thought they'd been.
Alastor has to reassure them that he won't say anything but it takes them a long time to fully believe that.
And nope! Alastor doesn't have powers. I was thinking that his mother might though and she was one of the first superheroes that was arrested. This gives him a connection to superheroes, a personal hatred for the law, and a reason to have hidden the fact that he knew about their powers so long (he doesn't want to endanger them and watch them be ripped away from him and each other)
