I'm not sure if you have any interest in fan fiction, but here we go.
There were many potential characters with scenarios going wild in every way.
For instances, a game cafe owner who's an alien and he makes games from our world available to be played by the chars of the MCU chars. How do they play? Well, as if their soul get sucked into the game of course! Although the universe is the same as the one from the movie - A tad gloomy atmosphere because the DC universe is also here - it's fine nonetheless. Ohoho, look at them all. Startled, shocked, fazed, terrified, infuriated. Heck, even Hawkeye needs to cooperate with Harley just so they can beat the dinosaurs in Ark: Survival.
(A Game Cafe In The Marvel Universe)
Being a gamer is one thing, but being a game dev is another whole level, plus the much easier game engine helps create the games. This was also in the MCU, but it was much more lighthearted and barely had any sad moments. Kinda repetitive, but still has its own fun. Uses the same formula as the first story (above this) when it comes to gamers gaming the game created by the game dev - Sucking their soul - with some uniqueness though. And when everyone knows your game and also plays it, what else to do? Well, open a portal to another universe and offer them games too! And also a little bit of tech on the way there. Oh, and umm, Pokemons too.
(Marvel: The Game Maker)
What happens when a theoretical physicist manages to beat a giant fetus and basically the entirety of the US army and Black Ops get transferred to an ultramodern city with angels and academies everywhere see-able by our mutual friend and get tasked to guide the students of said academies? There are troubles bound to happen soon, even though the physicist's journey has just started. It is only the beginning, but it's already chaotic.
(Resonance Entanglement | AO3)
Set in the same universe but with a different timeline like the theoretical physicist, a renowned assassin wakes up in the middle of a train. With only that much explained, there shouldn't be too much unordinary stuff, right? Oh no no, the assassin once had a dog, and the dog was killed. So, with a bazillion of bullets, armaments, and a pencil, he killed many who got in his way of vengeance. You'd know just how f**ked up the evildoers of the universe are going to be.
(A man like him... Is a teacher?! | AO3)
A timeline where the green-haired boy was alive before the existence of quirk. He studied in the school where quirk was found for the first time, but he was not there to witness it nor to live with it afterward. No.
He was stuck, hundreds of feet below the ground. How did he get stuck in a futuristic-ish facility deep under the sea level? He himself has forgotten how he got here, time flew by quickly.
He received augmentation with denial and grief. He was sustained and kept alive alone for more than a century or two after the event of an escapee gaining her freedom at last.
The name of the escapee? Chell.
He was alone, broken, and kept on getting tested. Chambers after chambers he went through.
But then, a group of heroes rescued him, and now he's under a duo's care. He wasn't a human anymore, no, he's not.
He's a subject.
(Take my brain, or what remains | AO3)
I would be eager to tell you more about fanfictions and its ideas but I might run out of space to type soon. So, how are these?