Disclaimer: I do not own Marvel Cinematic Universe, Buffyverse or anything else you may recognize

So we're finally gonna do the IW/Endgame fic of this MCU/Buffyverse combined worse, and I hope all enjoy it.

Last time I did an IW/Endgame plotline was 'Heroes Stand United'. Now the IW portion will mostly be the same as that fic, with changes too, but the Endgame portion is going to be completely different from that fic, since that one only mainly had the final battle, this will have some more.

This takes place after Buffy Season 5 in my verse, and the final 4 episodes of Angel Season 2 will happen alongside this. Those who've read the Daredevil/Angel spin-off will know why, those who haven't will find out later.

Anyway, hope all enjoy this opening.

Chapter 1- A bad dream?

Buffy Summers, the Slayer, the Chosen One, held a sword in her hand as she looked around at the trees in the daylight. They were swaying due to a light breeze, but Buffy didn't feel calm. She felt terrified.

The breeze was picking up pace, and Buffy could feel her dread increasing second by second.

Then, in front of her, there was a blue rip in Space as out walked a giant, purple being, whose sheer presence radiated power, authority and fear.

He wore a golden armor with a golden helmet on top of his head, and that just increased his menace to her.

In his left hand was some kind of Gauntlet, and while Buffy had no idea what it could do, she just felt terrified of it, and the power she could feel coming from it.

Then she heard a familiar swinging sound and looked up to see Peter Parker aka Spider-Man swinging at the being, but in spite of his swiftness, the being was faster and grabbing Peter by the throat, slammed him to the ground hard as Peter gasped.

"Insect", the being growled in a voice that only made Buffy more afraid of him, as Peter tried to struggle but it was in vain.

There was a sickening crack and Peter stopped struggling as Buffy covered her mouth with her hand in horror.

"NOOOOOOOOOO!" She heard a girl's voice cry out in grief and disbelief.

Dawn!

Buffy wanted to move and try to fight the being, but she was just frozen in place, why, she could not tell.

The being then raised his hand in which he wore the Gauntlet, and she saw six glowing Stones. She recognized one of those as the one on Vision's forehead. She could feel the power coming from each and every one of those Stones.

Then the being clenched his hand into a fist as Buffy heard multiple screams, crashes, and people running around in terror.

She covered her ears and fell to her knees, trying to block out the sounds, but they only got louder when suddenly she heard another crack and saw Peter's neck had snapped back into place, his mask now gone as he stared at her with pale, ghostly eyes.

"You failed", he said in a weird, really deep voice that echoed everywhere even though it was an open area.

Buffy let out a scream of horror as all the sounds got louder.

Buffy's eyes opened with a gasp as she shot up, covered in nothing but bedsheets, and looked around, panting heavily.

"What's the matter, Slayer?" Spike, also naked except the bedsheets, asked as he woke up next to her.

They were in his crypt.

"Peter", Buffy whispered to herself.

"What? You cheating on me with him? What about nibblet?" Spike asked her as she rolled her eyes.

"I just had a bad dream", Buffy told him in a whisper. "Peter, and many other people, I think they all died."

"Huh", Spike said. "And you just can't live with yourself if you don't care, do you?"

"Well how can I?" Buffy asked, glaring at him.

"Whatever, it's just a bloody mess, best not to think of it", Spike said as he went back to sleep with a yawn, while Buffy sighed.

Sometimes, she really regretted this relationship. He was nice to her, but he still behaved like a jerk quite a bit, and his callousness was very concerning to her.

He still had no soul, so she was disgusted at herself for sleeping with him, the others didn't even know about it, even though Spike wanted them to know.

But he wasn't bad, was he?

With those thoughts in mind, along with her nightmare, Buffy lay down once more, though she wasn't really able to sleep again.

'What am I doing?' She thought to herself.

Deep Space

Loki, the God of Mischief, stood in the burning and ruined wreckage of the Statesman, looking around in horror at the dead bodies of the slaughtered Asgardians. He may not be one of them by blood, but he had always been one of them by heart. In spite of his evil deeds, he did care for them. And now he had begun to see he could be better.

"Hear me and rejoice. You have had the privilege of being saved by the Great Titan." One of the beings who had attacked his ship announced as he walked around the bodies, "You may think this is suffering. No. It is salvation. Universal scales tip toward balance because of your sacrifice. Smile. For even in death, you have become Children of Thanos."

The being passed by Loki and walked up to an 8 foot tall figure in a golden armor with a helmet. He was looking the other way but he still inspired a feeling of dread within Loki.

"I know what it's like to lose." The figure, who was none other than the one who had been in Buffy's nightmare, Thanos himself began in a deep voice that chilled Loki to his core, "To feel so desperately that you're right...yet to fail, nonetheless."

Thanos turned around and picked up a wounded person who was lying at his feet. It was Thor Odinson, Loki's brother.

"It's frightening. Turns the legs to jelly." He said as he marched to Loki, still holding Thor, "But I ask you, to what end? Dread it, run from it...destiny arrives all the same. And now, it's here. Or should I say...I am."

And then he revealed a gauntlet in his left fist with 6 slots. One of them had a purple, glowing Stone in it. The Power Stone!

"You talk too much." Thor groaned as Thanos sat him on his knees.

Loki would have tried to do something if three other figures were not behind him. One of them was a dark-haired woman with a three-pronged spear. The other was a giant with some kind of hammer. The third was a hooded figure with a glaive in his hand.

"The Tesseract. Or your brother's head." Thanos said as he put the Gauntlet close to Thor's head, "I assume you have a preference."

"Oh, I do." Loki said bluntly, "Kill away."

Thanos moved the Power Stone to Thor's head and it glowed, striking energy into his head as he screamed in pure agony.

In a few seconds, Loki's resolve shattered, "All right, stop!"

Thanos stopped and moved the Power Stone away from Thor's head who groaned painfully, "We don't have the Tesseract. It was destroyed on Asgard."

Loki then raised his hand regretfully and the Teserract appeared, to Thor's shock.

"You really are the worst brother." Thor said and would have growled if he could.

"I assure you, brother...the sun will shine on us again." Loki assured him as Thanos chuckled.

"Your optimism is misplaced, Asgardian." Thanos said and Loki smiled.

"Well, for one thing, I'm not Asgardian." Loki said, "And for another...we have a Hulk."

With a roar, a huge green beast rushed onto the scene and tackled Thanos away as Loki dropped the Teserract and pushed Thor out of harm's way. It was the Hulk! He bellowed angrily at Thanos in challenge.

Hulk punched Thanos, sending him back before punching him two more times and then elbowed him twice on the shoulders before slamming him into the wall. He then held Thanos in a chokehold.

The huge creature with the hammer moved to help Thanos when the announcer with spindly fingers raised his hand, "Let him have his fun."

Thanos grabbed Hulk's hands and slowly pushed them back before striking his shoulder, staggering him back. Then he blocked Hulk's punch and struck him, staggering him again. He then dodged another and punched his back, throwing him off. Thanos kept blocking Hulk's punches and punched him back several times, smashing him into a pillar. He then kneed Hulk's face before lifting him up and throwing him down.

Thor grabbed a metal pipe and rushed Thanos, hitting his helmet. Thanos was barely affected while the pipe shattered. Thor made to attack again but Thanos kicked him away.

The one with the spindly fingers then telekinetically trapped Thor with several pieces of broken metal.

Heimdall looked at Thor and now knew what to do.

"Allfathers...let the dark magic flow through me one last...time." He groaned as his eyes changed color. Putting his hand on Hofund, Heimdall used his power and a great beam of white light passed through, lifting up Hulk, transporting him to safety as he light disappeared.

Thanos now moved menacingly towards Heimdall, glaring at him as he took the glaive from his hooded child. Heimdall looked sadly at Thor whose eyes widened in fear.

"That was a mistake." Thanos said and stabbed Heimdall with the glaive, ending his life.

"NOOOOOOOOOOOOO!" Thor screamed in agony, pained at the loss of one his oldest friends. His grief then gave way to rage.

"You're going to die, for that!" He roared at Thanos.

Ebony Maw gagged him with a piece of metal and shushed him.

The hooded child, who was called Corvus Glaive, took back his glaive as Maw picked up the Teserract and bowed before Thanos, "My humble personage...bows before your grandeur."

Thanos took off his helmet, revealing his bald head, and also took off his armor, revealing his huge black vest.

"No other being has ever had the might... nay, the nobility... to wield not one, but two Infinity Stones."

Thanos took the Teserract from Maw who said, "The Universe lies within your grasp."

He shattered the Teserract in his hands. The Space Stone was revealed.

Thanos blew away the glass and slowly fit the Space Stone to the Infinity Gauntlet as power ran through him.

"There are two more stones on Earth." Thanos said to his children, the Black Order, after a moment, "Find them, my children, and bring them to me on Titan."

"Father, we will not fail you." The woman with the three-pronged spear, who was called Proxima Midnight, said as she and the other three bowed to him.

"If I might interject." Loki said as all turned to him, "If you're going to Earth, you might want a guide. I do have a bit of experience in that arena."

"If you consider failure experience." Thanos mocked.

"I consider experience experience." Loki said.

"Almighty Thanos... I, Loki, prince of Asgard..." Loki looked at Thor and said, "Odinson..."

He then continued, "The rightful king of Jotunheim... God of mischief... " A dagger materialized in Loki's hand suddenly, hidden from all while Thor watched in concern.

Loki continued, "Do hereby pledge to you... my undying fidelity." He kneeled and bowed before Thanos, taking a deep breath. Then, moving at quick speed with his Asgardian reflexes, he lunged with his dagger, only for Thanos to press his fist as the Space Stone glowed and the blue energy stopped Loki's hand.

"Undying?" Thanos mocked before grabbing Loki's weapon hand and making him drop the dagger, "You should choose your words more carefully."

He lifted Loki by the throat, slowly choking him as Thor watched.

"You... will never be... a God!" Loki wheezed out as his skin color returned to blue. Thanos squeezed his neck and a crack was heard as Loki went limp, his eyes wide and mouth open, blood running down his nose and mouth.

"NO!" Thor screamed but the gag muffled him.

Thanos dropped a dead Loki in front of Thor who stared heartbroken.

"No resurrections this time." Thanos said coldly.

Thanos activated the Power Stone and the ship started breaking apart as purple flames, explosions and energy covered it. Thanos then activated the Space Stone and a portal appeared behind them as he walked into it with the Black Order, transporting them away instantly.

The metal restraints broke and the light disappeared as Thor crawled towards Loki, not caring about the ship being destroyed around him.

"No…Loki…" He said in grief as he put a hand on Loki's chest and bowed down, sobbing. The Statesman exploded in a purple energy of fire.

Earth-199999, New York Sanctum

Doctor Strange and Wong were about to head out for some ice cream as they bickered about the money (or lack thereof) on the latter's person when something crashed through their window. They whirled around to see a giant hole in the staircase as it crashed there. They cautiously approached the hole as Strange summoned the Cloak of Levitation and his uniform appeared while Wong summoned Tao Mandalas.

The two peered into the hole to see Hulk reverting back to Banner.

"Thanos is coming. He's coming…." Bruce breathed out in terror.

"Who?" Strange asked, to confirm what he had heard.

And that's the start. Thank you to Brainstorm Sorcerer for his help with the dream scene.

I love Season 7 Buffy/Spike but Season 6 Buffy/Spike was toxic as hell, so I'll be working to make sure the Season 7 version happens, but we won't get anything like THAT bit from 6x19, because that was just a bad choice IMO, and honestly, now it feels to me like Joss did that to punish Spike and Spuffy fans for liking him and the relationship, since Spuffy ended up being as popular as, if not more popular than Bangel, and Joss' original plan was to off Spike in 10 episodes, which I'm glad didn't happen.

Anyway, hope all enjoyed and see you all next time with another chapter. Stay safe from the coronavirus ya all!