Disclaimer: I don't own Marvel or any of the other fandoms nor am I making any money from this. If I did own them there would be a lot more GLBT Superheroes.

Warnings: This will probably be combined Movieverse with some The Avengers: Earth's Mightiest Heroes since I just got all of Season 1 on DVD. Also I still think this is mostly crack/humor there is plot finding its way into the story. And my brain is making a large background for it too. Bonus points for anyone who catches all the other fandom references.

Notes: Because I had Xander say he'd been working with the Slayer for 10yrs here is my timeline, it is still very loose but what I'm working with is that events in the show are all moved forward 5 years. So the Hellmouth was destroyed in 2008 in this universe. Xander is around 25, Dawn is physically around 21 and Faith is around 24.

Tony awoke on the couch and quickly stood-up as he remembered why he had fainted in the first place. Well not fainted, more that his brain overloaded and needed a reboot. Because that sounds better than fainting. He saw that Steve was sitting next to him looking slightly worried. Natasha was texting away rapidly, probably Pepper, Fury or Rhodey. Nearby Thor was quietly talking to Bruce who had been later returning home from the mission and missed the earlier excitement. On the smaller couch sat Coulson and Clint, their shoulders just touching. A faint blush was on Clint's face but Coulson like always showed very little expression of what might be going on in his head. However, there was no sign of his son.

"He said he'd be right back but needed to grab a couple of items from the car," spoke Steve quietly next to him.

"What?"

"Your son, he said he would be right back. I figure you were probably wondering."

"Oh, yeah, I was hoping that was all. I didn't want him to think I disapproved or something, and then leave."

"You are okay with your son being engaged to Loki?" asked a very surprised Steve. The rest of the Avengers stopped what they were doing to listen to Tony's answer.

"Well, yeah, pretty much, I'm okay with it. There was so long of his life that Xander hasn't been in my life too. I obviously don't know enough about his life but what I do know is that Xander has been hurt a lot in the past. I just want my kid to be happy. If that crazy-ass Loki is what does it, then yeah, I'll pay for the largest wedding they want."

"AWWW! The Tin Man has a heart. That is so cute!" squealed a young female voice. "OMG! You are all more adorable in person. I could just snuggle with each one of you forever and ever!"

The Avengers quickly turned to the door to see a beautiful curvy brunette woman standing the doorway. Behind her was Xander, shaking his head in amusement. The young woman giggled before throwing herself on Coulson's lap and wrapping her arms around his neck. Xander did notice that most of the room looked ready to attack.

"Relax; this is just one of my best friends, Dawn Summers. As long as you don't attack her, she won't attack you," explained Xander.

"Hello, Dawn, still drinking too many mochas, I see."

"Blasphemy, Agent P! There is no such thing as too many mochas," as Dawn snuggled into Coulson's shoulder she looked around the room before settling her eyes on the man next to her. The man trying to not be obvious in glaring at her. "Oh relax, Red Arrow. I'm not going after your man. That would be wrong on several levels!"

Bruce started chuckling at the Red Arrow comment. He would have to remember to ask her what she thought of the last episode. None of his other team members would watch the show with him.

"It's Hawkeye, not Red Arrow!" mumbled Clint under his breath.

"Dawn, play nice please. Why did you decide to intrude on Xander's father/son bonding time?" asked Coulson while he slightly tightened his arm around her waist in a hug. He could feel the tension in her body which led him to believe something was wrong.

"I'm mostly here for support while Xan does the big reveal to his Dad and apparently his Dad's work buddies. I am also trying to decide if I want to work for S.H.I.E.L.D or Professor Xavier before hitting grad school. And I missed you, Agent P!"

Coulson just raised an eyebrow at her.

"Okay, fine, be that way. I had another fight with Buffy about not joining the Council. She just wants me somewhere she can control me. I'm tired of her threatening any possible dates I have. I'm a big girl of twenty-one!" sighed the young woman in frustration.

"You think Xander will be less protective than your sister?" asked Natasha, wondering really how tough a girl named Buffy could be.

Bruce was now even more eager to talk to the girl because obviously she was highly intelligent if she was taking a break before going to graduate school at only twenty-one. Plus, Charles Xavier did not offer jobs to intlectual idiots. People who have less social skills and common sense than God gave a snail sure but book smarts he was picky about.

"Xander knows I can protect myself. He helped train me against my sister's wishes. Between Xander, Spike and Faith, I'm very well equipped on defensive maneuvers," giggling she placed a kiss on Coulson's cheek. "Oh yeah, can't forget the training Agent P also gave me. Plus, Loki has been teaching me a few magic tricks."

"Dawn, you know she just cares because you are the only real family she has left," sighed Xander. It was an old argument.

"That is a worthy concern then. I still care deeply for my brother. It would please me to get to know the both of you."

"Yeah, great, wonderful, Thor. But I think I get dibs on getting to know my son and his friends. Because apparently I have a lot to learn!"

"Chill, Tin Man. I think everyone can get to know everyone at once. In fact, I think Xander should start by introducing the Avengers to Hannibal King."

"NO! Please, tell me you don't know that stupid vampire hunter?" spoke Natasha glaring. She got so tired of that idiot hitting on her every time they crossed paths.

"Hahaha, now you really have to meet him! Please, Xander, bring him in. I'm sure Tony won't mind!"

"Yeah, son, I want to meet everyone who is important to you."

"Okay, just a second. He is waiting in the car." Xander left the room smiling.

"Dawn, how long have you known my son?"

"Yeah, Dawn, could you also move to a chair?" growled Hawkeye.

"I've known Xander since I first existed," she answered with a secret smile. Dawn did move over to the couch near Thor just to calm down the archer. She knew eventually he'd be wrapped around her finger like all the men in her life. "Spike and he use to take turns baby-sitting me."

"This is the second time you've mentioned a man named Spike. That seems like such a strange name for a young girl's baby-sitter," questioned Steve.

"Oh, he also went by the name William The Bloody, part of the vampire scourge of Europe. At the time he was trying to get on my sister's good side and helped protect me."

Everyone but Agent Coulson stared at the young woman in shock. Once again Tony was figuring out there really was a lot that his son had been keeping secret from him. Steve could remember running into that vampire once upon a time. In fact he remembers the dark maiden that travelled with them had tried to flirt with Bucky Barnes. Strange times during war, those comics really only made-up half the things printed.

Moments later a small tan blur ran past them and into Agent Coulson's lap. It quickly began licking his face. Everyone relaxed when they saw it was a dog, a somewhat large sized tan Chihuahua.

"Why does everyone keep jumping my boyfriend?"

"Ha, you owe me twenty dollars, Thor! I knew Clint would break first and use the boyfriend word," cheered Natasha.

"'Tasha, how could you bet against me!"

"Not to raise any concern but how did a dog get in here?" asked Steve.

"That is Hannibal King, my trained vampire hunting dog," said Xander as he leaned in the doorway.

"Wait? This is the Hannibal King that you wanted us to meet?"

"Yup, don't worry she is house broken."

"She?" asked Natasha grinning like it was Christmas morning.

"Yeah, when I saw her in the shelter kennel she reminded me a lot of King. She was loud, yappy but super protective of what she deems hers. Plus, she really is cute in her own way. Everyone doubted that I could train a Chihuahua to hunt vampires. It is typically larger breeds that are known for their fierceness. But Hani took to training like a fish to water."

The dog in question had settled down to snuggle between Clint and Coulson. They had to admit she was pretty cute for a Chihuahua. Xander sat down on the floor in front of both men too so that he could look over to where his father was sitting.

"Where do you want to start the questioning?"

"Let's start easy for now, son. How long are you planning to visit me? And can I talk you into staying here?"

"I am honestly between jobs. I've burned out for a while from hunting overseas. I'm actually looking at a place to buy in town. I may start helping take care of a few girls that are too young to train or who no longer have family due to supernatural reasons. I was hoping you wouldn't mind me crashing here until I can get set-up. And apparently Dawn too."

"Of course you and your friend are welcome to stay here for however long you need. I'm not going to be able to avoid having to talk about magic am I? I really hate the stuff."

"Aw, that is so cute. Your Dad hates magic and in return magic hates you! Well except Loki's magic. Then it is all sexy fun times."

"Dawn Marie Summers!"

"Well, next time lock the door! Or don't make-out in the kitchen where anyone can walk-in!"

"You weren't supposed to have been home for several hours and it was my house!"

Tony looked back and forth between the two as they continued bickering. He finally looked over to Steve for help. There was so much he wanted to know about his son but he didn't have a clue where to start.

"Hey kid, when did you discover Stark was your father? I don't ever remember reading it in a S.H.I.E.L.D file on him," questioned Clint.

"It is not in any files that most agents can get too. My security rating is as high as Nicky boy's clearance in the States and higher in the United Kingdom. But we discovered that Tony was my father after the Initiative disaster. I was too worried to approach Tony but Agent P and Nicky talked me into it about six months later. So we have known each other for a little under four years."

"I never knew you didn't want to approach me, Lex. But thank you, Agent Coulson, for talking him into it," frowned Tony trying not to show how badly that hurt him.

"Dad, it had nothing to do with not wanting to meet you. My life was and is very dangerous. I didn't want you get dragged into that. I was also afraid you wouldn't like me because I was the genius you are and that my grandfather was. I'm just the donut boy."

"Stop that talk!" Dawn walked over and whacked Xander on the back of the head. "Willow, Buffy and Giles have all apologized for ever saying those things. Xander, you are such important part of our lives. Always have been and always will be!" She gave him a giant hug and sat on the floor near him too. Hani leaned down and licked Xander's ear.

"Okay, okay, I'm sorry but bad habits are hard to break."

"You are a lot like your father, Lex. He never truly sees his own worth. He may talk big but he rarely believe the good words he says about himself," spoke Steve looking between father and son again.

Just then Xander's phone started ringing and began playing a catchy pop song, breaking the tension of the moment.

"Always we will fight as one,

'Til the battles won,

With evil on the run,

We never come undone,

Assembled we are strong,

Forever fight as one,

Avengers Assemble!"

"Dude, really?" whined Clint.

"Your phone is getting hacked and that is going away right now!" growled Tony.

Xander just smirked before leaving the room to answer it.

I am basing Hannibal King off a very sweet dog that has been at my shelter since May. I personally prefer big dogs but this little sweetie snuck inside my heart. I hope she gets adopted soon but for now she is my muse for Xander's dog.

Thank you everyone who happily surprised me with all the love for this fic. I actually started writing because of an anon flame pissed my muse off and that kicked started my writing because I'm the type of person if you tell me not to do something I'll want to do it even more. However, I'm not very confident with Marvel universe and that is NOT a plea for ego pats but more of a warning on why updates might be slow at times. Rarely will I be writing things on Fridays & Saturdays because that is when I volunteer at my local animal shelter.

Questions on pairings: Who else should be secondary pairings? Dawn/? Natasha/? Bruce/? Faith/? I'll stick with canon Jane/Thor. So I am open to slash, femslash and hetero ideas. It could be anyone in either Marvel or BtVS. I read a really silly awesome fic that had Dawn/Deadpool happening. I think Faith and Daken taunting each other would be amusing too. But yeah, ideas please!