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
