"We are each our own devil, and we make this world our hell," - Oscar Wilde
Stark flies toward the invading Chitauri and opens fire, destroying several of them. While he flies he tries to call War Machine to join the battle, but he said he was busy fighting soldiers working for the Ten Rings at the battle of Hong Kong
Thor arrives at Stark Tower and threatens Loki to turn off the Tesseract. Loki states that it cannot be turned off, and the two fight on the tower as more Chitauri arrived. In a Quinjet, Hawkeye, Black Widow, and Captain America fire on several Chitauri before being shot down by Loki, who then jabs Thor with a small dagger before fleeing on a Chitauri Chariot. On the streets, the NYPD fires on the invading army to no effect, as Rogers, Barton, and Romanoff fight the army on the streets while protecting as many civilians as they can. Captain America takes command of the NYPD and tells them to set up a perimeter down to 39th Street. The NYPD are later supported by the National Guard.
When Thor is flying around in New York, Iron Man asks him if he has ever seen Game of Thrones, saying that he reminds him of it. In response, Thor asks how can Tony joke when they are in the middle of a war. Before he could finish his sentence, Thor is eaten by a Leviathan. In a rage, Thor uses Mjølnir to get out of the creature.
After some fighting, Bruce Banner arrives, and Stark leads a Leviathan towards him. Banner transforms into Hulk and destroys it with Stark's help. For the first time, the Avengers stand united, ready to defend New York City. Loki orders the Chitauri to arrive in full force. Captain America assumes command: he details Hawkeye to take a high vantage point and call out attack patterns and strays; Stark will maintain air superiority against the Chitauri; Thor can use his lightning to bottleneck the portal; Rogers and Romanoff are to keep the fighting on the ground, and Hulk only gets one word, "Smash."
-Atlas-
Harry made eye contact with the hulking green creature for a brief moment and saw a look of surprise flicker on its face when the being it had launched didn't break the windows but rather bounced off. Then it roared and vaulted off in search of further prey.
"Hermione you and Ginny get to the command room and get me in touch with Ron right now."
"Where are you going?"
"We're under attack luv, saving people of course."
"Really Harry, I might have bought that in Hogwarts doesn't to be you anymore."
"Not entirely correct but I have also been doing all this training, I've been itching to try myself against something new and look at those things," Harry said pointing to the armored grey creature "They are coming out of a space portal, I don't think after this my presence will be especially unusual."
"Alright go, your suit is in your office stay safe," Hermione left with Ginny after a brief kiss.
Harry sprinted to his office and quickly slammed his palm into the hidden sensor on the side of his desk. It read his magical signature and opened a concealed vault door in his office to reveal his third love and baby.
The expanding helmet was completely matte black inspired by a cartoon villain he had seen in his youth named Deathstroke. A true feat of technomancy, made from a vibranium-silver alloy it could take heavy punishment and thanks to the silver retain certain mystical properties. It had a multi-spectrum visual display with smart informational overlay fed live from Atlas' servers. Recycled its own oxygen with limited underwater capabilities for emergency situations, breathing under water wasn't much of a concern when one could simply cast a bubblehead charm. The armor came into two layers. The under armor was super-compressed dragon tissue and stored in the hollows of Harry's bones. The tissue exited through skeletal pores and slid between all cells to self-assemble a new "skin" around him serving as a powered exoskeleton. The outer layer was comprised of a basilisk skin suit with reinforced hard point to protect his vitals and soft point. A layer of electronic devices had been woven between the layers for two purposes: monitor his body to prevent damage where it could and allow him to safely channel a great deal of his magic reinforcing his body without overtaxing his system. Clever application of port key let him will the outer layer upon his person in just under two seconds. Harry wasn't exactly pleased thinking it still took to long, nonetheless understood new tech took time to refine.
Armor on, Harry jumped off the edge of the patio and took flight.
"Alright, who wants to be first?"
"Harry can you hear me?" Ginny's voice came in over the helmet's communication system.
"Loud and clear, what's going on."
"We just spoke to Ron, he had to divert the forces he was sending to back you up to Hong Kong, there's a situation brewing there and with you here he figured they would be better served to protect our assets there. He does have air support headed your way though."
"Got it, there seems to be a team fighting back, tell Hermione to scan for any comms and see if she can patch me in."
Harry then saw an Iron Man blast past him with a giant flying armored alien sea turtle hot on his tail.
Shaking his head Harry muttered, "And I thought blast ended skretws were weird." Launching himself at the beast Harry begins by blasting it with the standard Hogwarts fare.
"Reducto!" The Leviathan barely flinched roaring in defiance. Taking the opportunity as it presented itself Harry fired, 'Aqua Eructo', launching a jet of water at its open mouth. Followed rapidly with a 'Duratus' freezing the water and the Leviathan's mouth open. Seemingly sensing the degree of potency behind Harry's magic, it broke off its chase from Stark and attacked him. Harry almost laughed out loud.
Idiot beast, he thought. Deciding to have a little fun before moving on Harry pooled his magic waiting for the creature to reach him and his wand arm outstretched the magic visibly simmering around his hand. Apparently recognizing the incoming attack the Leviathan tried to dodge but wasn't fast enough to react as he incanted 'Vera verto' to be greeted with the sight of a slowly morphing Leviathan turn into a 10 meter glass goblet. Unfortunately, he didn't have a great deal of time to admire his Handiwork and vanished it before it could crash into the fleeing civilians below.
INSIDE THE IRON MAN SUIT
"Sir, there seem to be reinforcements."
"I noticed, how was he flying."
"Unknown sir, the scan I got of him was brief but he seemed to be self propelled strangely enough."
"Keep an eye on and let the others know not to interfere as long as he's helping.
Elsewhere felt the wave of mystical energy behind him as he flew towards the tower. Not feeling anything malicious he decided to concern himself with it later. Thor grabbed onto the tower. Raises Mjölnir and unleashed a blinding bolt of lightning strikes down from above and channeled it towards the portal and the Chitauri soldiers flying out. Enheartened as he watched them and a Leviathan drop dead out of the sky.
HELICARRIER
"Sir there is an unknown being taking out Chitauri in midtown, he might be some kind of 0-8-4, he's doing it with his own power. I can't see any tech," Agent Maria Hill reported.
"Keep tracking him, we'll need to bring him in after this."
"Understood, and sir. The council is on."
"Shit." Fury thought as he left for the council room.
Back in Manhattan Hulk was attacking any and all targets of opportunity. Though they are more than capable of fighting the invasion, Romanoff knowing they needed to close the portal in order to win. With Captain America's help, she jumps onto a Chariot to make her way to the portal only to be pursued by Loki. Hawkeye targets Loki with an arrow, which he catches, but it explodes, causing him to crash at the top of Stark Tower. Hulk arrives and beats Loki into submission with frightening ease. Unfortunately, even with Loki defeated the Chiturai continue to invade and begin to wear the Avengers down. With Harry hopping around the skies taking down Leviathan's left and right the strain was reduced but becoming apparent.
Now free of Loki's control, Selvig tells Romanoff that he had enough control to build a failsafe into the portal device which could shut it down using an energy just like it, which means they can use Loki's spear to close the portal.
HELICARRIER
Meanwhile, Nick Fury's superiors, the World Security Council, order Fury to launch a nuclear missile at New York City to end the invasion, but Fury refuses the order.
The world security council choosing to bypass Fury issued an order. "This Secretary of Defense Alexander Pierce of the World Security Council. Override order EX910. Director Fury is no longer in command., 7 ALPHA 11, deploy.
"7 ALPHA 11, confirmed. Preparing to takeoff." The pilot confirmed as he ignites his engine.
Back in the bridge, Agent Hill glanced at her station and noticed 7 ALPHA 11 was in motion on the flight deck and preparing to leave. Immediately turning to the Director she exclaimed.
"Sir, we have a bird in motion! Anyone on the deck, we have a rogue bird! We
need to shut it down! Repeat! Take off is not authorized!
Nick Fury ran out onto the deck carrying an RPG while praying to god the pilot wasn't an absolute moron that armed his payload, he took aim fired. A direct hit to the tail, he hadn't done that since his CIA days, but he still had it. The jet skid across the deck leaving the pilot unharmed and potentially soon out of a job. Fury was momentarily relieved only to turn and see another jet fly off unable to do anything about it.
"Stark, you hearing me? We have a missile headed straight for the city."
"How long?"
"Three minutes, at best. Stay alert and wipe out the missile."
FIREBIRD HQ
Ron was watching the battle unfold in New York as he prepared a containment strategy in case the avengers initiative failed. They were effectively containing the threat but against a seemingly endless onslaught even Harry would eventually tire. The ion weaponry on the Firehawk would be able to take down the Leviathan.
"Sir S.H.I.E.L.D. just deployed an F-35, it's headed straight for New York with a nuclear payload."
"Bloody hell, are they insane. Can we intercept?"
"We only have surveillance in the area, we won't get it before it fires.
'Dammit Ron thought as he moved to the communications panel. "This is Redfist. I want to birds ready to pull out Hermione and Ginny yesterday."
Firehawk pilots responded immediately. "Acknowledged Commander, moving to new AO."
"Sir don't you think the military will freak out somewhat if we send in fighter planes"
"I think the bloody aliens falling out of the Merlin damned portal has them busy at the moment."
MANHATTAN
Stark followed Fury's command and tried to call his girlfriend, Pepper Potts, realizing that he may not survive. Pepper failed to answer because she along with the rest of her staff were watching the battle on a television abroad the Stark Jet wondering if Tony was still alive. Harry was clearing the area around the portal, taking down the Chitauri trying to intercept Tony.
"Hermione, what's Stark carrying."
"I've been listening in on their comm feeds, it seems to be a nuclear device."
"These yanks don't do anything by half eh?" Harry muttered to himself as he yanked another Chitauri off a carriage and used him as an alien shield against the two creatures attacking him.
Back on the helicarrier bridge, every single agent held their breath as they too watched Ironman fly up into the portal. Iron man climbed higher and higher over the city, gaining speed, giving it his all and flinging himself through the portal, all communications died at that moment.
The suit began to freeze Tony noticed as a feeling of dread crept up on him. Nothing matched the horror he felt however as he saw the black sky filled with what must have been at least ninety ships in a vague cluster. Most of them hanging back waiting to deploy as a few moved forwards. He let go of the missile as it flew of into the void of space he began freefalling towards the rapidly closing portal. Feeling his consciousness slip away he hoped his sacrifice was worth it, however not before seeing what he suspected to be the mother ship get impacted by the nuke and detonate. Imploding cheerfully as it destroyed the surrounding armada in a supernova explosion.
Suddenly, all of the Chitauri soldiers and leviathans keeled over and with a brief shudder ceased to function.
Thor and Captain America see the supernova coming towards them. Thor nods to Cap who then proceeded to order the Black Widow to close the portal.
Harry saw the small figure hurtling towards the earth doing it's best impression of a wronski feint. He intercepted the free fall as he caught Iron man around the chest only to be yanked off violently by the Hulk as he snatched both of them out of the air in a rapid descent towards street level.
Seeing the Chitauri had ceased fighting Harry reckoned the battle had come to a close. Choosing to embrace the most ancient and noblest of wizarding traditions when faced with unfamiliar and possibly superior force, he apparated out of the Hulk's fist back to his penthouse.
Harry had a hell of a day and the Avengers were victorious.
After the fight, the Avengers went to Stark Tower to capture the injured Loki and took him into custody. Harry reappeared in his living room and made his way to his office to remove his armor.
"Honeys, I'm home."
"Harry! Are you ok? You hurt?"
"Nothing pressing or urgent, maybe a few bruised ribs. However that's from the Hulk holding me like I was his favorite sandwich."
"We can take care of that at HQ. Ron has jets hovering at high altitude ready to take us home."
"No, send them back. I'm sure the Americans have already noticed them and it'll lead them directly to us. In addition, as much as I enjoy flying spending 4hrs in the cockpit of a Firehawk after a battle sounds horrible. Ginny, charter the fastest plane available for us."
"On it, I'll have Poppy meet has on Atlantis."
"Urgh, I guess. You'd think at my age she'd stop treating me like a first year."
"Harry, I'm pretty sure she does it because she knows it annoys you."
