Superman!Derek protects the people, Stiles fights for the people.

Stiles sipped at a mug of coffee, absently watching the news play in the break room. Because of course a news station couldn't play anything other than its own content, even in the one part of the office that was supposed to be a safe space from work. His interview with Superman was making a rerun and Stiles glanced at Derek before commenting absently, “I’d totally let Superman fuck me.”

Derek, who had been in the middle of a swig of coffee, choked violently, “That’s not something I needed to know at nine in the morning, Stiles.”

He enlists the help of Lydia Martin, a woman with the scream of a banshee; 

Allison Argent, the archer with lethal aim; 

Isaac Lahey, a man who can run at the speed of light; 

Erica Reyes, an Amazonian; 

Vernon Boyd, an Atlantian; 

and Liam Dunbar, a young man with a power ring that allows him to make constructs out of energy.

He takes lead of the team with the help of his best friend, Scott (the Alfred to his Batman), but the team is missing one member: the Man of Steel; Superman

Stiles sipped at a mug of coffee, absently watching the news play in the break room. Because of course a news station couldn't play anything other than its own content, even in the one part of the office that was supposed to be a safe space from work. His interview with Superman was making a rerun and Stiles glanced at Derek before commenting absently, “I’d totally let Superman fuck me.”

Derek, who had been in the middle of a swig of coffee, choked violently, “That’s not something I needed to know at nine in the morning, Stiles.”

I actually wrote one myself a while ago and I’ve been meaning to go back and continue it...

It’s A Symbol Of Hope - CelestialVoid (G)

Stiles was a young reporter who was captured by Deucalion's rebel army and held captive. Six months later, he's brought in to interview his saviour: Superman.

[AO3] [Tumblr]

Others I can find include....

Bad Liars and Spec Ops by ThatDamnKennedyKid (M)

When Stiles comes back from her sixth tour with the Special Forces, she moves into Metropolis with her best friend, Scott. She picks up a job as a "source" for the Daily Planet.

As soon as she meets Derek Hale, a beefy but meek and shy reporter, she knows something's not right about him. The problem will be getting anyone to believe her theory.

Spuperman by bottledyarn (T+)

“You must have seen me on the news,” Stiles said. “Wall climbing boy rescues kitten? Creepy crawly nuisance terrorizes theater performance? Police beg man to stop making petty thieves wet themselves?”

(This one is both Superman!Derek and Spider-Man!Stiles)

I just want to stay high with you by Skylar102 (G)

It's their two year anniversary and Derek is ready to tell Stiles the truth

The Man Behind the Glasses & Cape by DarkAlpha67 (M)

The wooden floorboards thudded loudly as he climbed the stairs, announcing his presence, though he knew Derek had heard his arrival long before he entered the barn.

Reaching the top, his eyes didn’t need to look far, zeroing in on the single form standing just outside the open “window” depicting a cosmic scenery, bathing the man before him in streams of silvery light.

“Hey.” He said softly, moving forward.

Derek didn’t turn around. His head was bowed down, eyes fixed on something in his hands

*

OR: Derek Hale is Superman and engaged to one Stiles Stilinski. Only people don't really see the appeal of Derek Hale or what Stiles sees in him when he could have someone like Superman. Said people are stupid and Stiles is gonna set the record straight for Derek.

There’s a lot more fics under the AO3 tags Derek Hale as Superman

@loveyprophet also did a cute little short Superman AU comic that’s worth looking at - here

Chapters: 1/1 Fandom: Teen Wolf (TV) Rating: Teen And Up Audiences Warnings: Creator Chose Not To Use Archive Warnings, No Archive Warnings Apply Relationships: Derek Hale/Stiles Stilinski Characters: Derek Hale, Stiles Stilinski, Erica Reyes Additional Tags: Alternate Universe, Alternate Universe - No Werewolves, Alternate Universe - Superheroes/Superpowers, Derek Hale as Superman, Police Officer Stiles Stilinski, Identity Reveal, Nerd Derek Hale, Attempt at Humor, Tumblr Prompt, Friends to Lovers, POV Stiles Series: Part 1 of Tumblr Fics Summary:

Superman has a crush on Stiles. How does Stiles know? Well, there's the fact that he can't do his damn job without Superman swooping in and saving the day. And there's the fact that he sticks around and chats him up afterward too. Stiles is a cop and knows how to read signs, so it's not just him being full of himself.