Disclaimer: I do not own Arrowverse or Marvel Cinematic Universe.
Avengers Compound
Logan, Storm and Bobby had arrived to the compound in the car, while Scott was sitting at the entrance and eating a taco but a gust of wind from the beam of light on the lawn blew the contents of the taco away as Logan, Storm, Bobby and Scott stared in astonishment at Tony, Thor, Clark and Diana, with the new Gauntlet and Tony's new suit.
"You like it?" Tony quipped as he did a pose with his armor and everyone chuckled at his antics.
"Steve, are you sure about this?" Sharon asked, while Steve was polishing his suit and shield before he put the cloth on the desk.
"It's our only chance, Sharon. Nobody gets second chances if we lose this time." Steve said.
"We did. We have a second chance now." Sharon said as she held him by his arm and he turned to her, with her giving him a pleading look. "Steve, war isn't just about charts, plans, math and strategies. It's about having heart. We have heart. Thanos doesn't. Don't let it all cloud what's at stake, Captain. As long as we look out for each other, you don't have to worry too much."
Steve smiled at her appreciatively as she placed her hand on his chest and they stared at each other for a moment before kissing and they let the kiss sink in for a few moments before pulling away.
"Just be careful, please." Sharon said.
"Easier said than done, but I'll do my best." Steve promised as they smiled at each other.
"Allen." Harry called as he approached Barry.
"What?" Barry asked as he turned to Harry.
"I figured it'd be good time to give you this." Harry said, showing Barry a golden ring on which was a symbol of a lightning bolt inside a circle, much like the emblem on his suit. "I've been working on this since arriving here, when I remembered that Thawne had a similar ring. It's in case you need to suit up immediately instead of this wardrobe change in S.T.A.R. Labs and I may have borrowed and played a bit with the Pym Particles that Lang mentioned."
"You're saying my suit is inside the ring? How does it work?" Barry asked. He always wondered how did Thawne put his suit inside a ring.
Harry was next to Barry as he reached with his hand and put on the ring, thumbing the stud as the ring opened, ejecting the Flash's suit out of the ring like an airbag as Barry caught it.
"All you need to do is vibrate the molecules in the suit to put it back into the ring. What do you think?" Harry asked as Barry looked at his suit and the ring and smirked.
"Cool." Barry said.
Oliver was preparing the trick arrows and putting them in the quiver as Natasha entered.
"Are you ready for this?" Natasha asked as Oliver turned to his wife.
"As ready as I can be but… it's not like you can really get ready for something like this, when you have no idea what awaits you." Oliver said.
"There's no giving up to these guys, kid."
They turned to see Slade enter as Oliver smiled at the words.
"Don't tell me you've turned back into that whining stupid playboy castaway I'd met years ago back on Lian Yu." Slade said, managing to make them chuckle.
"Do you think that the stupid playboy castaway kid could beat aliens from outer space?" Oliver asked.
"Well, I didn't think that you could beat me either. Wouldn't be the first time I was wrong." Slade said dryly as he pointed to his eyepatch as they all chuckled again before Slade got serious. "I understand that you're worried but as long as we look out for each other, don't leave any room for doubt in your mind." Oliver smiled, glad that he at least didn't lose his brother-in-arms as Slade picked a bottle of Australian rum and placed glasses on the table and put in them ice cubes before filling the glasses. "Remember this, kid?"
"You want to drink this now?" Oliver asked.
"We might not get another chance." Slade pointed out and Oliver nodded as he, Natasha and Slade clinked their glasses.
"To Yao Fei, Shado, Sara, Tommy, Thea, Roy, Cisco, Joe, Bucky and everyone else that we have lost because of Thanos." Oliver toasted.
"And let us hope that we can bring them all back and make it out alive." Natasha added.
"Amen." Slade said as they drank.
The group was gathered in the briefing room, ready to take the fight to Thanos as Steve turned to everyone, all of them feeling a myriad of pressure, excitement, fear, vindication and more upon the anticipated encounter with Thanos.
"All right. We have a plan. Two missions, two teams, one shot." Steve said.
Oliver, Natasha, Slade, Helena, Bruce, Clark, Kara, Thor, Diana, Barry, Caitlin, Ronnie now merged with Stein, Constantine, Pietro, Tony, Peter, Nebula, Shang-Chi, Daisy, Matt, Frank, and Logan stood together as they listened to Steve.
"Last time we went up against Thanos, we lost. All of us. We lost friends. We lost family. We lost a part of ourselves. Today, we have a chance to get it all back and protect what we have. You know your teams, you know your missions. Get the stones. Get them back. Look out for each other. No mistakes, no do-overs. This is the fight of our lives. No second chances. Failure is not an option. Losing is not an option. Whatever it takes." Steve said and they nodded. "Good luck."
"He's pretty good at that." Rocket noted as he and Scott observed.
"Right?" Scott chuckled.
Harry typed in some commands on the console as the breach opened and they entered it.
New Titan
The heroes exited the breach as it closed behind them before looking around at the grassy area in confusion, while they split into two groups. Oliver, Natasha, Slade, Bruce, Clint, Clark, Thor, Constantine and Shang-Chi were in one group, while Barry, Kara, Helena, Ronnie, Caitlin, Pietro, Peter, Nebula, Matt and Frank were in the second.
Barry looked around until he saw a shadow in a shape of a man with red eyes. Barry narrowed his eyes, that shadow, it couldn't be…
"Barry?"
Barry turned to Peter before turning back but the shadow was gone as Barry looked pale.
"Are you alright?" Peter asked. "You look like you saw a ghost."
"God, I hope not." Barry muttered.
"Are you sure this is the right place?" Steve asked over the comms.
"'The garden on which I'd see the sun rise on the grateful universe.'" Nebula said, quoting Thanos's words.
"Grateful." Thor spat.
"Killing half of all life in the entire universe and the madman expects us to be grateful." Diana said, just as disgusted as they walked ahead slowly.
They saw a wooden house in front of them, with a double-edged sword impaled to the ground, when a moment later a blue portal opened as Thanos went out with the Infinity Gauntlet in his hand but what shocked Clark and Kara was who was accompanying him.
"I told you I'd have my revenge, Kal-El." Zod said.
"Why am I not surprised that you've joined Thanos?" Clark asked sarcastically.
"And he's not alone."
Oliver glared as he recognized the voice and they saw Malcolm Merlyn, Adrian Chase and more villains appear behind Thanos.
A blue bolt of lightning sped around and Barry's blood boiled, while seeing a glance of a red bolt of lightning as well.
"I knew it." Barry hissed.
A moment later, Zoom appeared in front of the group. "Surprise."
"You." Caitlin glared at Zoom.
Barry's eyes narrowed, looking around. He was sure he had seen Thawne earlier, so where the hell was he? But he had no time to think, as more enemies appeared and Barry was forced to dodge some darts and shurikens in superspeed, while Matt jumped in and blocked the projectiles with his billy clubs as he and Shang-Chi faced Murakami, Nobu and the ninjas of the Hand.
"Last time you got lucky, Devil of Hell's Kitchen. But your luck has run out." Nobu said.
"I don't need luck to stop you." Matt said as he and Shang-Chi engaged Murakami and Nobu, exchanging blows, while Peter fired web bullets at the ninjas and thugs of the Hand and Frank roared, opening fire with his machine gun.
Barry and Pietro ran in superspeed, engaging Zoom and Godspeed, while Barry was looking around for Thawne and dodging the attacks of the evil speedsters they were fighting.
Caitlin turned into Frost and was about to fire beams of ice but was forced to cross them with her Earth-2 doppelganger, while Firestorm was facing off with his Earth-2 doppelganger.
"Did you really think it'd be that easy?" Killer Frost smirked.
"Well, it's like looking into a freaky evil mirror." Ronnie said.
"Be careful, Ronald. He's not going to hold back." Stein cautioned.
Deathstorm threw a giant ball of fire as Ronnie dodged before blasting Deathstorm away and Ronnie flew at him as they began exchanging blows.
Diana and Kara were about to join the fray but as they leapt into the air, they were knocked down as from above flew down a grey-haired man who then fired heat vision beams but Diana blocked them with her bracers before they looked up at the Kryptonian above them.
"Non." Kara glared.
"Your new allies won't help you or Kal-El, little girl." Non said smugly as he flew down at them.
Oliver fired arrows at Malcolm, who dodged before Oliver used his bow to block the shurikens that Adrian was throwing at him. Malcolm pulled out his sword and attacked before Natasha entered the fray and blocked the sword with her batons.
"Get away from my husband." Natasha sneered.
"The legendary Black Widow. I've been looking forward to this." Malcolm said as he and Natasha began trading blows with their weapons and sparks flied.
"I told you, Oliver, everything you touch, dies. You've lost half of the people you love. I'm gonna make sure that you'll lose the rest of them, starting with your beloved Natasha." Adrian said smugly.
"I'll make sure you won't live to see it." Oliver said.
"There he is." Adrian smirked in satisfaction. "There's the killer. You kill me, you'll be what I've always said you are."
"No. I'm not gonna kill you because you think I'm a monster. I'm gonna kill you because you are one that needs to be stopped once and for all." Oliver said firmly.
The smirk vanished off Adrian's face as it turned red with rage. He wasn't able to get into Oliver's head and make him doubt himself that easily anymore, which just infuriated him. Adrian roared and rushed at Oliver, swinging his sword, while Oliver raised his bow to block. Oliver pushed Adrian back as they traded blows and Oliver refrained himself from using his Uru arrows, since he needed to save them for more serious and bigger threats than Malcolm or Adrian.
Clark and Zod were taking the fight into the skies as Clark gave Zod a powerful punch, sending him flying in the air miles away. Clark flew at high speed at Zod, trying to ram him but Zod recovered and grabbed Clark by his arms and threw him down and upon hitting the ground hard, Clark created a small crater. Before he could get up, Zod flew down at him at high speed like a torpedo and delivered a small flurry of punches before Clark used his hands to stop the fists coming at him. Clark got up as Zod grunted, with the bones cracking, while Clark headbutted Zod as the crater enlarged with the resulting shockwave. Zod freed himself from the grip as they exchanged blows before Zod got behind Clark, holding him in chokehold.
"Thanos promised me a new world for our people, once I help him destroy your friends. New Krypton. This is your and Kara's only chance, Kal. Join us, so that we can rebuild our home or die with your friends." Zod promised.
"That's never gonna happen." Clark choked out as he threw Zod over his shoulder, knocking him down.
Zod roared in rage as he got up and his eyes glowed red, firing heat vision beams but Clark dodged them before he flew above and dodged Zod's punch. Clark grabbed Zod by his wrist and twisted his arm before punching him in the chest, sending Zod down but Zod managed to recover before he would crash to the ground. Both Kryptonians were circling each other midair before they flew at each other again and upon the impact created a massive shockwave that knocked some people on the ground down and shattered the trees below them.
As Clark recovered, he didn't see Zod anywhere as he looked around and hoped that he had managed to take him out as he flew down.
Matt and Shang-Chi flipped as Nobu attacked with his chain blade before Matt and Shang-Chi engaged the Hand ninjas as Matt blocked with his billy clubs and then jumped, knocking them down. Shang-Chi engaged Nobu and dodged and blocked with graceful moves before he delivered few blows at Nobu's chest, making him stumble back as Nobu smirked, impressed.
"You fight well. You should join us." Nobu said.
"I've already been used as a weapon for a criminal organization before. Never again." Shang-Chi said.
"Then it's a pity to kill a valiant warrior like you." Nobu said, twirling his chain blade.
Shang-Chi flipped and dodged, while the blade grazed him, cutting into his clothes before he rolled forward and kicked Nobu in the chest as Nobu staggered. They exchanged few blows before Shang-Chi grabbed Nobu by his arms and kicked him in the leg, forcing him on his knees and Shang-Chi kicked Nobu in the face, knocking him down.
Oliver dodged as Adrian attacked with his sword and they were trading blows as their weapons crossed before Oliver found an opening and kicked Adrian in the chest as Adrian stumbled back before their weapons clashed again.
Natasha dodged and rolled down as Malcolm attempted to cut into her and he had to admit, he was impressed by the Black Widow's skills, now he understood what Oliver saw in her. Natasha raised her batons to block Malcolm's sword before Natasha flipped, disarming Malcolm but as her feet hit the ground, Malcolm managed to punch her but Natasha blocked before he kneed her in the abdomen. Natasha grabbed Malcolm by his arm and managed to wrap her legs around him as she got on top of him and pulled a garotte, wrapping it around Malcolm's throat, trying to choke him.
Malcolm roared as he threw Natasha, knocking her down before he turned to catch an arrow that Clint had fired, with the tip of the arrow inches away from his face as Malcolm smirked but as the arrow beeped, Malcolm's eyes widened. The arrow exploded in sparks, knocking him to the ground as he yelped and internally cursed himself for falling for the same trick twice.
Oliver delivered several punches at Adrian's face, dazing him before Oliver threw him down. Natasha got up but Malcolm was already nearing her as he recovered his sword before Slade rushed in with a roar as he used his sword to block Malcolm's before he could finish Natasha off.
"Not so fast." Slade snarled.
"So now you've joined them after what you did to them?" Malcolm asked.
"At least I still have my honor, unlike you." Slade sneered.
Malcolm and Slade were parrying and attacking with their swords and Malcolm was honestly impressed by Slade's swordsmanship skills. Slade dodged as Malcolm almost cut his head off, while cutting into Malcolm's arm as Malcolm hissed before pulling out a knife and stabbing Slade in his side. Malcolm pushed Slade away but before Malcolm could finish him off, Slade kicked him back as Malcolm staggered, while Slade pulled the knife out, ignoring the pain.
"Even without the Mirakuru, you're a commendable warrior and swordsman. I can see who did Oliver get his skills from. Pity you never joined the League." Malcolm said.
Slade was about to attack again but stopped, when he noticed a group of Chitauri aiming blasters at them. Oliver, Slade, Clint and Natasha retreated, taking cover behind the trees, while Oliver and Clint fired arrows and Natasha and Slade pulled out their guns, opening fire and dodging the blaster shots from the Chitauri and arrows that Malcolm and Adrian were shooting at them.
"You know, this makes me miss Budapest!" Natasha yelled.
"No kidding! Budapest was walk in the park compared to this!" Clint snapped.
Clint emerged from his cover as he fired an arrow, hitting one of the Chitauri's heads, while the arrow burst out a ring of secondary projectiles, shooting the aliens down before Helena joined in and took cover behind a tree, pulling out a pair of crossbows and firing the bolts. Oliver took a breath and decided that now was as good a time as any to use his Uru arrows as he notched one of them and emerged from his cover. Oliver fired an Uru arrow as it pulsed with lightning and seeing that it was no ordinary arrow, Adrian and Malcolm jumped away to avoid and the following explosion sent them both flying away, disappearing from everyone's sight. Seeing an opening, they charged forward to get to Thanos.
"Well, you gotta tell me where you got those, when this is over, Oliver." Helena said and Oliver chuckled.
Constantine summoned hellfire as the old grey-haired man in front of him tried to freeze him with his magic as Constantine glared, while golden circles glowed around his hands.
"Bloody Hell, Felix, I've always known you were a wanker but have you lost your mind, working with Thanos?" Constantine snapped.
"Thanos offers true power, John. You used to understand that." Felix Faust said.
"And I know that this kind of power always comes with a price and I'll be damned to Hell again before I pay it." Constantine said as Felix laughed maniacally.
"You're damned already, John! But I'll gladly make your wish come true!" Felix yelled madly.
Fiery chains wrapped around Constantine but magical symbols circled around him as he muttered an incantation, extinguishing the fiery chains before Constantine threw a magical ball at Felix who summoned a barrier that shattered upon impact with the magic ball and Felix screamed, engulfed in flames.
"Send Lucifer my regards." Constantine said as the flames consumed Felix before he disappeared.
A pack of Outriders were coming their way as Logan began ripping them apart with his claws until Daisy quaked them away and Nebula cut them down with her swords, while Thor threw Stormbreaker as a boomerang, taking out the aliens engaging them and Kara fired heat vision beams before the axe returned to Thor, who jumped high and slammed the axe into the ground and the resulting shockwave took out a considerable amount of the Outriders and a moment later Non was plummeting to the ground, with Diana on top of him as she stepped on his chest, pinning him down.
"Impossible… you couldn't have defeated me." Non said.
"There's a saying, pride comes before the fall." Diana said before she pulled out her sword and impaled Non, who gagged, blood filling his mouth before he tilted his head, light leaving his eyes.
Barry and Pietro were in a superspeed chase with Zoom and Godspeed as Barry had to dodge the lightning strikes from Godspeed. Zoom was nearing Pietro, about to claw into him but Pietro ran up on the tree and jumped and as Zoom did the same, Pietro grabbed him by his wrists and spun around before throwing Zoom down into the nearby crevice and Zoom screamed, his voice echoing upon the fall and having no wall or ground to run on.
"You didn't see that coming?" Pietro quipped.
Barry used his vibranium sword to block another lightning from Godspeed, who formed a lightning sword in his hand. Barry's eyes pulsed with yellow lightning as they rushed at each other and their weapons crossed, their movements being just blurs with fast-paced exchange of attacks before they retreated with cuts across their suits.
"Don't you get it, Flash? You can't kill a god!" Godspeed gloated.
"I don't disagree but you're not a god of lightning. I am!"
Godspeed looked up and then tried to run away but speedster or not, in comparison to Thor's lightning strike his speed was no match as the bolt of lightning from the skies struck Godspeed, blinding Barry and Pietro for a moment and when their vision cleared, at the spot where Godspeed had been a moment ago was nothing but scorched ground as Thor landed with Stormbreaker.
Killer Frost was distracted by the lightning strike for a moment, which was the opening Caitlin needed as her freeze beams sent her evil doppelganger to the ground, knocking her out.
"Thanks." Barry said and Thor nodded.
"Let's get the Stones back." Steve said.
As they advanced and the rest was still preoccupied with other villains, black crystal spikes suddenly emerged from the ground.
"Get back!" Thor ordered as they retreated and a dark-haired woman in green dress with a crown with black thorns showed up and then they saw Mjolnir sailing through the air as they dodged before it would hit them, while Hela approached the group with a sadistic smirk.
"Hello, brother." Hela said as Mjolnir returned to her hand.
Thor glared and lunged at her, while Cheetah tried to lunge at him but Thor effortlessly knocked her away before engaging Hela as Mjolnir and Stormbreaker clashed, sending a blast of lightning into the skies. Hela summoned a Necrosword and cut Thor in his side as he grunted but didn't relent. Hela pulled away as Thor almost fell down and she bashed him away with Mjolnir.
Thor recovered as he buried his feet in the ground and regained his footing but stiffened as he heard a familiar voice.
"Brother."
Thor turned to see Loki and stared in disbelief, which was the opening Hela needed as she threw Mjolnir at him, hitting him in the face and knocking him down to the ground before both of Thor's siblings marched towards him.
Tony fired a barrage of missiles at Thanos but Thanos formed a barrier with the Space Stone as the missiles exploded upon impact before the flames were absorbed into the Infinity Gauntlet. Thanos threw a torrent of fire at Tony but Tony responded by firing lightning repulsor beams from his gauntlets, holding the flames back.
"How do you like that?" Tony smirked as from his arc reactor on his chest shone out Unibeam that sent Thanos staggering back.
Thanos raised his hand with the Gauntlet as the Stones glowed before lines of webbing latched onto the Gauntlet as Peter tried to yank it off Thanos's hand but Thanos pulled, hurling Peter into the air. Kara flew in and grabbed Peter before he would hit the ground as she helped him land safely.
"Thanks." Peter said and Kara nodded.
Pietro and Barry rushed at Thanos in superspeed but a green circle glowed around the Gauntlet as Thanos used the Time Stone, rewinding time and sending Pietro and Barry back where they had been earlier.
Hela was about to attack with one of her Necroswords but Diana rushed in and blocked with her sword and bashed Hela away with her shield. Thor dodged as Loki attacked and noticed that Loki was holding back, seeing the hesitation in his eyes. Thor knocked Loki down and approached him, but what happened next shocked him as he froze.
"Do it. Do it!" Loki begged with tears in his eyes. "Kill me before he kills me again, please, brother, I am begging you."
Thor realized that Loki had been forced by Thanos to do his whim. "No. I'm going to save you this time."
Thanos was about to use the Stones again, when he heard a bestial roar and Hulk rushed forward and held Thanos's hand, not letting him close his fist and use the Gauntlet.
"I've beaten you before, Hulk. Your resolve is admirable, but you are nothing." Thanos said smugly as he threw a punch but Hulk grabbed his other hand as well, smirking.
"Yeah, let's show him who's the boss! Hulk. Smash." Bruce said.
Hulk headbutted Thanos, dazing him before delivering a relentless flurry of punches that staggered Thanos back. Hulk pinned him to a tree that collapsed and was about to punch him again but Thanos blocked as they were exchanging blows but this time Hulk was holding his own, blocking and countering before they grappled each others' hands, trying to push the other back as both of them let out roars of rage.
"Did you really think that being angrier than before would help you beat me?" Thanos asked as there was a bone-cracking noise as he tightened his grip on Hulk's hands.
"Hulk… just… distracting…" Hulk said.
Thanos's eyes widened, when Hulk lowered his head and next thing Thanos knew, Clark and Kara flew at him, punching him hard in the face as Thanos stumbled back. Clark punched Thanos, knocking him down and with Thanos stunned and losing focus, Kara landed and yanked the Gauntlet off his hand before Thanos sensed that his hand was bare.
"No!" Thanos shouted.
Clark grabbed Hulk as he, Tony and Kara with the Gauntlet flew back to the group and Thor summoned Bifrost as the beam of light consumed the heroes and as the light faded, they had disappeared with Loki.
Thanos glared as he got up on his feet and seethed, roaring in rage.
Avengers Compound
The beam of Bifrost hit the ground as Pepper, Harry, Sharon, Fitz and others went outside to see Oliver, Barry, Helena, Slade, Clark, Caitlin, Ronnie, Kara, Natasha, Bruce, Clint, Thor with Loki, Constantine, Shang-Chi, Pietro, Peter, Nebula, Matt and Frank come out from the beam as it faded before they noticed the Gauntlet.
"You did it!" Fitz exclaimed.
"Oh, I knew you could do it!" Pepper exclaimed as she rushed at Tony and kissed him, while hugging him.
"Tell me you're done making the Gauntlet." Steve said as he turned to Fitz and Harry.
"Almost." Harry said.
"Almost?" Tony scoffed jokingly before turning to Bruce. "Well, I think these half-brains, well, that would mean one complete brain, needs two more brains to help!"
Bruce chuckled and smiled.
"What the hell is he doing here?!" Pepper demanded and as they noticed her fierce glare, the group turned to finally notice that Thor had taken Loki with him as everyone, especially Oliver, Clint and the original Avengers, except for Bruce, shared the same glare as Pepper.
"Thor, have you lost your mind?!" Barry snapped.
"Why on Earth would you bring Reindeer Games with us?!" Tony exploded.
"I told you, Loki has changed." Thor said before turning to Bruce. "Banner was there too."
Bruce looked sheepish. "Well, he did help us but… he still gave Thanos the Tesseract."
"I had no choice." Loki said as Clint scoffed.
"Yeah, right, he used the Mind Stone on you too." Clint said sarcastically.
"Thanos's vizier promised me that if I failed to bring the Tesseract to him, Thanos would make me long for something sweet as pain." Loki said, tormented as they had never seen him before. "Can you imagine dying in agony and then being brought back to life, only to endure agonizing death over and over, again and again?"
Those who had been through more painful experiences like Oliver, Natasha, Clint and Thor could understand and seeing the haunted look in Loki's eyes, they felt some grudging sympathies towards him.
"I told him I'd rather die than serve him, but dying a horrible painful death and being brought back to life endlessly and repeatedly is fate worse than death." Loki said.
"I am sorry." Thor said as he placed his hand on Loki's shoulder. "I know Thanos forced you to and I know you've wronged us in the past but you've redeemed yourself in the eyes of Asgard. Now is your chance to redeem yourself in the eyes of Earth and humans and other realms and together, we can finally have revenge on Thanos and the rest."
Loki considered before smirking and nodding, entertained by the idea as he remembered when Thor had offered to free him from Asgard's dungeons when they had planned to sneak Jane and Aether out. "Well, when do we start?"
New Titan
Thanos was sitting down on the porch of his demolished house, seething, when a voice spoke up.
"You've failed."
Thanos looked up to see the spectral form of Thawne.
"I underestimated them." Thanos admitted.
"They don't know when to give up and there is only one kind of defeat they know. But I can bring you to them. I can take over one of them and open the gateway for you and then we can finish what we started and make them all suffer." Thawne promised.
Thanos's lips curved into a sadistic smirk, intrigued by the idea. "What do you need from me to do?"
"Wait." Thawne said before his spectral form vanished.
Avengers Compound
Harry was looking at the computer, when lights flickered and he looked confused before going out and looking around. He looked into the shadows and saw red eyes and a vibrating shadow and he barely had time to scream, when the red-eyed shadow rushed at him.
Pity they never handled the Flash ring somehow better in the show, instead of Iris Jr. could've had Thawne/Wells from Season 1 or Harry make it and give it to Barry.
Yes, Thawne, in ghost form from Season 6 of The Flash is working with Thanos and as you've guessed, he's possessed Harry. Like in Aragorn's story 'Heroes stand united', Thanos has used the Stones to summon/resurrect and recruit various villains from MCU and Arrowverse and DC Comics to help him guard the Stones.
I'm not going to ask for a poll with suggestions for villains this time, since considering how many times have I done this sort of thing before, both in MCU and Arrowverse/DC Comics, I already have a list of villains I'd use for the bigger battles, even though it is difficult to handle so many characters at once, when writing group fight scenes or juggling between multiple fights between multiple characters and I hope you've enjoyed the fight scenes, even though group fight scenes with multiple characters are difficult to write.
Now the heroes got the Stones back and like in Aragorn's story 'Heroes stand united', Thor took resurrected Loki back with them, since Thanos forced Loki to help him.
So, what do you guys think?
Please review and let me know if you have been enjoying this so far.