Playboys To Dads

Summary: Avengers X Justice League Crossover AU, Tony Stark aka Iron Man and Bruce Wayne aka Batman are both really good friends, they are playboys after all. But once they meet their matches in both Steve Rogers aka Captain America and Clark Kent aka Superman. Everything changes, trading the wild parties for nights at home, from one-night stands to a wedding ring and most importantly they become Dad's. Tony X Steve and Bruce X Clark.

Note: (IMPORTANT READ) Okay so this is my first slash, so I hope I don't mess up. So things you guys need to know, Tony is four years older than Bruce, also I won't be bringing in the kids until later I want to build in their relationships a bit. I will be mixing a lot from the Movies/Cartoons/Comics in the story okay.

Disclaimer: I don't own the Avengers they belong to Marvel; I don't own the Justice League it belongs to DC Comics.

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Playboys To Dads

One: Best Buds (Prologue)

The first time Tony Stark met Bruce Wayne; he was eight years old and had been force to go to Gotham by Howard. He had met four year old Bruce and saw that the kid was not happy to be there either, but he had been treated a bit nicer by Dr. Thomas Wayne.

"Thomas this is my son Anthony." Howard said with force kindness.

"Hello, Anthony is nice to meet you." Dr. Thomas had said kindly and shook his hand and he was not lying at seeing the sincerity in the man's eye. "Howard, Anthony meet my son Bruce." The little boy looked at them and smiled shyly.

"Bruce." Howard said. Both boys didn't talk much that first meeting...

#

Their second meeting was not a kind one. It was during the funeral of Thomas and Martha Wayne and Tony pretended he didn't want to go. But he did, mostly because Thomas had treated him incredibly nicely when they met. To Tony it just seemed weird to be in Gotham for the funeral it was raining as if mourning the loss as well but then he thought that the rain was normal for Gotham. He saw all of the people go to the little boy standing there and Tony could tell he was trying not to break down. He knew most of the people here, even his Dad in a way were just there for the publicity. Tony walked over to the little boy and the butler and stood next to him, before grabbing his hand and saying nothing at all. Before he left, he just heard one word.

"Thank-you." Tony smiled at that.

#

Since then Tony and Bruce exchange mail most of the time and built their friendship seeing each other occasionally from time to time. When they see each other it is really the only time that they are actually being themselves not putting on a mask for the public or for Tony' parents or Alfred. It happens for three years before Tony hears the news.

In the funeral Tony sees how direly similar it is to Bruce's parent's funeral with fake smiles and people keep saying 'Sorry, for your loss.' It gets really annoying. Obadiah Stane like the man that ran Wayne Enterprises is standing behind him.

"Everything is going to be taken care of, Tony." He says squeezing his shoulders.

Tony felt like puking his stomach out. He didn't even notice Bruce coming until he came and held his hand, like Tony had done for him that day in his parent's funeral. Once the caskets are lowered he wants to leave and Bruce seems to read this and pulls him with him toward one of the cars. Obadiah wants to object, but Alfred stands in his way.

"I think it would be preferable for Master Anthony not to be near any of this." he says and he doesn't look back as he gets in the car with the two boys. They arrive to his house and Tony gets the only thing he can do and gets the bottle but before he can do anything Bruce takes it away from him.

"They're dead, they never spent time with me and now they're gone." He tells Bruce.

"I won't tell you anything you've already heard Tony." He tells him and Tony lowers all of his walls and crumbles into the ground to cry his eyes out even if Bruce is seeing him. Bruce doesn't really care, he wanted to be there with his friend even in dark time, because he lives in this pain every day and hopes his friend doesn't have to. That night they stayed together something that wasn't very different for them; they had done so many times before.

#

When Bruce disappears after the Joe Chill case, Tony is the first person Alfred calls to find out.

"What do you mean Bruce disappeared?" Tony asks and he is a little drunk but that sobers him up instantly.

"Master Bruce did not return after the trial." Alfred told him.

"We'll find him." Tony says.

Eight years past and Tony is building Stark Industries to the best in the world. He knows that Bruce was pronounced dead but he doesn't believe it. When he hears from the media that Bruce Wayne is alive and well, Tony is pissed and he calls Bruce to his home.

"What the fuck man, eight years." He yells.

"Hello Tony." Bruce says. Tony hears it there something there something dark in Bruce's voice that he notices. "How you been?"

"Building the future, what are you planning?" Tony asks.

"See if Mr. Earle will give me a job." Bruce tells him.

"Good luck than." Tony says but for some reason he doesn't believe it.

#

The moment Tony figured out that Bruce was Batman, he did the only thing he could do and got on one of his planes scaring Pepper to go to Gotham City. When he arrives, the mansion is in ruins and he walks up to Bruce after Rachel left.

"Really, you had a party and didn't invite me?" he says and Bruce turns around to see him.

"I was too drunk to remember." Bruce tells him.

"Right; so I want to see it and don't try to lie because I will call bullshit on all of it, Brucie boy or would you want me to call you Batman." Tony tells him; Bruce looks at him in shock. "Really genius here."

"Fine." Bruce tells him.

#

It takes two years before Bruce or Batman is tag-teaming with Superman and Tony is laughing his ass off at the way and how uncomfortable Bruce is with the alien. Since they had been caught in television for that particular thing. He called Bruce after it.

"So, Brucie, how does it feel teaming up with the Man of Steel?" he asked teasingly.

"Overbearing Boy-scout." It's the answer he gets and Tony can't help but laugh. "Shut-it Stark." He says.

"No chance in hell, Brucie boy you should be a team player." Tony says.

"Really this coming from you."

It takes another year before Bruce and the team of other superheroes takes on Starro from taking down the world and Tony still can't believe it. He calls Bruce afterwards after he hears the name the Flash gives them.

"Really Bruce the Super 8?"

"We are changing the name." Bruce tells him and clicks.

#

A year later Tony is kidnapped and Bruce is going insane but knows he can't interfere either. But he is putting the Bat-cave satellites in Afghanistan and trying to find Tony. Nobody in the place questions him. When they finally find him and it's Rhodes that brings him down, Bruce calls Tony immediately.

"You lucky bastard." Bruce tells him.

"I guess." Like Tony before Bruce hears the change in the voice.

"You want me to come down?" Bruce asks.

"No I'm alright I want a cheeseburger." He tells Bruce.

"Alright, I'll talk to you later." Bruce says.

He gets his answer a few months later in the Manor watching television and he spits out his coffee when he hears Tony announcing to the world he is Iron man.

"What the hell are you thinking Stark?" Bruce says the moment Tony picks up.

"Nice to hear from you too Bruce."

"That is not the point; you told everyone your secret identity."

"Hey, it's easier this way Bats."

"It's to protect those you care about." Bruce told him.

"I can protect Pepper if something happens."

"Be careful you egotistical idiot." Bruce said with a smirk.

"You wound me you anti-social jerk." Tony said with a smirk of his own.

"I believe it's my job." Bruce tells him. "Anyway Potts met Kettle Stark."

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Two years later the Avengers Assemble and this time it is Bruce laughing his ass off. Afterwards he calls Tony on his cell.

"So, how did it go with the Captain?"

"That man has a stick up his ass." Tony told him. He was still annoyed at being reminded about his father.

"Well at-least we know he isn't the only one." Bruce tells him.

They both don't realize that these two men that annoy them are the ones that are going to change their lives.

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Note: Okay so this is the end of the chapter. Which this was more of a Prologue to anything so you guys could understand the relationship between Tony and Bruce. I hope I didn't mess up. Don't forget to review and no flames.