Hi Lilly! I'm so excited for Nat, I just saw Endgame yesterday so all the feels there about that. I'm pretty devastated about how it all turned out, I'll be honest.
But yes so eager to see Nat around, Like I said in the hold post I don't have any MCU characters myself but I do have a few Marvel folks who know her.
First is Tony Stark from the Avengers Academy mobile game, over there he had a kind of huge crush on Natasha while also being a bit scared of her, I imagine the same will go here.
Next would be Peter B Parker from Into the SpiderVerse, he's aware of the Avengers, has worked with them a bit in his world but again they're not MCU. So he'll know of Black Widow but yeah.
and then for Marvel the last is America Chavez who has worked alongside several Avengers in the comics but I don't think directly with Natasha, but she'll know about Black Widow too.
And then outside of Marvel I've got
Klaus Hargreeves from the Umbrella Academy and my newest Barbara Gordon from the DCU New 52.
Any of them would love to get to know/interact with Natasha, welcome to the game!