Disclaimer: I do not own Smallville, Arrowverse, or any other property of DC Comics that appears in this fic.
A summary of key events that occur after "Alternate Events 4: Multiversal Clashes" leading up to the Crisis. Will have only two chapters.
Chapter 1
After helping put a stop to the mess the Lex Luthors had caused by using a magical book to mind-control some of the Multiverse's most powerful heroes into battling each other, Conner Kent continued his life on Earth-1, protecting Central City and other parts of the world as Superboy alongside his friends, Wally West and Ralph Dibny as The Flash and Elongated Man respectively, with Cisco Ramon aiding the them from S.T.A.R. Labs. Aside from his heroic duties, Conner maintained his job as a janitor at CCPD, while his wife, Courtney Whitmore, still worked at the local library as she continued to focus mostly on living a normal life, reserving her Stargirl activities for major threats. Caitlin Snow continued to date Bart Allen and frequently visited him on Earth-21, often staying there for several days at a time before returning to her Earth, while Bart occasionally visited her on Earth-1 as well.
Two months after the mind-control incident, Conner and Team Super had to face a new enemy.
Clifford DeVoe, whom Cisco eventually nicknamed The Thinker.
On Christmas evening, Conner, Courtney, Wally, Cisco, Ralph, Izzy Bowin (Ralph's girlfriend), Joe West, Cecile Horton, and the latter two's daughter Jenna were enjoying a party at the West house when an alert of two samurais attacking downtown got their attention.
Conner, Wally, and Ralph took off to confront the samurais, who proved to be surprisingly powerful as they took the latter two heroes out of the fight rather quickly, stabbing Wally in the leg before knocking him and Ralph out. Conner continued to engage the samurais, discovering with his x-ray vision that they were, in fact, robots. The samuroids caught Conner off-guard as they shot him down with red sun energy blasts before managing to knock him out too.
When Conner came to, he found himself in a high-tech lair illuminated with blue lights, trapped in a red sunlight cell that he couldn't escape from, no matter how hard he tried. He was confronted by DeVoe, who explained that he had been keeping an eye on Conner and his team for a long time. DeVoe added that he originally intended to use Barry Allen, the original Flash of Earth-1, to further his goals, but had decided that Superboy would be a much better fit for the task. DeVoe's wife, Marlize, injected a blue substance into Conner's neck and the Boy of Steel was no longer himself.
With Superboy under his control, DeVoe instructed him to capture ten of the meta-humans who had gotten their powers from the Speed Force portal that Barry and Thawne accidentally opened: Becky Sharpe, Dominic Lanse, Edwin Gauss, Izzy Bowin, Janet Petty, Matthew Kim, Mina Chayton, Ralph Dibny, Ramsey Deacon, and Sylbert Rundine.
Obeying his commander's orders, Conner headed to Ralph's apartment, instantly knocked him and Izzy out at super-speed, and wasted no time delivering them to DeVoe's lair. Next, Conner captured Dominic Lanse, Matthew Kim, and Edwin Guass, the latter not being as easy as the others to find due to Edwin's ability to travel in and out of pocket dimensions. Conner then headed to Iron Heights, clicking a small device provided to him by DeVoe to disable all the cameras in the prison while using his powers to take out every guard in his path as he broke Becky Sharpe, Janet Petty, Mina Chayton, Ramsey Deacon, and Sylbert Rundine out of their cells, knocking all of them out before they could be aware of what was happening.
Once Superboy's task was complete, DeVoe used the metal tentacles of his hover-chair to absorb the powers of all ten bus metas into himself, killing them in the process as he transferred his consciousness into Ralph's body. Using Ralph's shapeshifting ability to assume his own appearance, DeVoe put Conner back in the red sunlight cell and prepared for the next step in his plans.
Meanwhile, Cisco, Caitlin, Courtney, Wally, and Joe tried everything they could to find their missing friends, with Bart from Earth-21 and Harry Wells from Earth-2 helping out as well. Cisco had attempted to vibe Conner's, Ralph's, and Izzy's locations, only for it to backfire due to DeVoe's defenses. After learning of the meta-humans that had gone missing from Iron Heights shortly after Ralph and Izzy were taken, it didn't take the team long to figure out that Conner was responsible for both incidents and whoever had sent the samuroids to attack the city was somehow controlling him.
As the days passed since her husband had gone missing, Courtney grew increasingly worried about Conner's well-being and hoped with all her heart that she would get him back in one piece. As with anyone who was fervently missing their spouse, Courtney was unable to sleep peacefully every night without Conner by her side. Thankfully, Caitlin frequently kept her company, kindly assuring Courtney that they would get Conner back, which helped ease the blonde's pain but not make it go away entirely. As Central City had lost two of its heroes, Courtney took up her duties as Stargirl, balancing her heroic activities with her normal life.
After three weeks, the team finally encountered Clifford DeVoe, as well as Conner, who was still under the meta-human professor's control, and a fight ensued. Bart, Frost, and Cisco engaged DeVoe, while Wally and Courtney took on the mind-controlled Conner.
Bart managed to land one rapid hit after another on DeVoe, who was taken by surprise at the Earth-21 Flash's immense speed, with Vibe and Frost managing to hit him with a few vibe and ice blasts. Bart continued attacking DeVoe at super-speed, smirking as he taunted the latter by calling him a 'slowpoke'. Just as it seemed that DeVoe was overwhelmed, he suddenly attacked Vibe and Frost with Izzy Bowin's sonic blast before immobilizing Bart with Janet Petty's gravity-manipulation powers.
As Conner and Wally flew and race around respectively, the latter avoided all of the former's punches before Conner froze the ground with his arctic breath, causing Wally to slip and fall on his back. Conner then grabbed Wally by the throat, preparing to kill him until Courtney yelled "Stop!" Courtney pleaded with Conner not to kill his best friend, adding "This isn't who you are" and reminded him of the hero he was. As Conner turned to her with a glare, Courtney continued to try to get through to him, urging him to fight it and remember who he was, finishing with "The man I married is not a killer." After a few tense seconds, Conner finally regained control of his mind and let Wally go while Courtney smiled, knowing that her husband was back.
Glaring angrily and clenching his fists, Conner wasted no time attacking DeVoe, sending his captor flying off with a powerful punch before blasting him with an intense blast of heat vision. Before DeVoe could recover, Conner used his freeze breath to encase the villain in a solid block of ice, which DeVoe quickly broke out of. Bart, Wally, Conner, Courtney, Cisco, and Frost then attacked DeVoe simultaneously, overwhelming him with their various powers before DeVoe activated multiple powers at once, sending all the heroes flying off and gaining the upper hand. As the DeVoe prepared to kill them, the heroes realized they weren't going to beat their enemy that time since he was too powerful and retreated to S.T.A.R. Labs, where Conner explained to his team everything he knew and, to their horror, revealed that DeVoe had killed the ten bus metas while absorbing their powers and took over Ralph's body.
As the heroes started planning their next encounter with The Thinker, Conner suddenly lost control of himself again, sucker-punching Bart and Wally before speeding away, leaving Courtney once again concerned for her husband.
Before the heroes battled DeVoe again, Bart fetched Clark, John Jones, and Earth-78 Superman (who happened to be visiting his Earth-21 counterpart at the time) from his Earth, while Cisco brought Barry, Kara, and J'onn over from Earth-38 before also reaching out to Jesse Quick and Jay Garrick on Earth-2 and Earth-3 respectively, with both speedsters agreeing to help out.
While Clark, Superman, John Jones, Barry, Bart, Frost, and Cisco took on The Thinker, J'onn and Kara engaged the mind-controlled Superboy, while Wally, Jesse, and Jay dealt with DeVoe's two samuroids. Courtney prepared to help her allies, only to be confronted by Marlize, who challenged the star-spangled heroine with her katana.
To his frustration, DeVoe easily got severely overwhelmed by his opponents, clearly having underestimated the sheer power of the Supermen and Earth-21 Martian Manhunter, while J'onn J'onzz and Supergirl of Earth-38 took down Conner as the former restored the Boy of Steel's mind to normal with his telepathic abilities before they went to help their friends.
Wally held his own rather well against the samuroid he was fighting, doing much better than his last encounter with it. As Wally was about to plunge his vibrating fist into its head, the samuroid was suddenly smashed into bits as Conner flew through it at full speed from behind.
At the same time, Jesse and Jay held their own against the other samuroid until it stabbed Jesse in the left shoulder and threw her away. Jay tackled the samuroid, only for it to send him flying off with a shockwave blast produced from stabbing its sword into the ground. Before the samuroid could finish off the two speedsters, Wally phased through it from behind, destroying the samuroid at last.
While Courtney easily took down Marlize with her superior combat skills, DeVoe was also down and severely dazed by the relentless punishment he endured at the hands of Clark, Superman, John Jones, Barry, Bart, Frost, and Vibe. Before DeVoe could even think about recovering, Jones attacked him with a mental blast, causing the meta-human professor to hold his head and scream in agony. J'onn unleashed his own mental blast, adding to his Earth-21 counterpart's attack on DeVoe, whose mind, by that point, was too overwhelmed to retaliate – not that it would've done him any good, since the combined metal powers of the two Martian Manhunters were much more powerful than those that DeVoe had taken from Dominic Lanse. Once DeVoe was unconscious, Bart bound his hands with power-dampening cuffs at super-speed and the heroes headed back to S.T.A.R. Labs, where DeVoe and Marlize were each placed in a pipeline cell.
As the heroes waited for their two enemies to regain consciousness, DeVoe came to first – only, to everyone's surprise, it wasn't him. It was Ralph, who was once again in control of his body as it shifted from DeVoe's appearance to his own.
After the heroes made sure that Marlize was sent to A.R.G.U.S. for imprisonment, while Earth-78 Superman took DeVoe's hover-chair up to outer space and destroyed it, Jones and J'onn scanned Ralph's mind for any traces of DeVoe's consciousness, but found no signs of the villain left. It was like The Thinker had ceased to exist. Jones deduced that his and J'onn's combined mental attack on DeVoe forced him to give up control over the body, allowing Ralph to reclaim what was rightfully his.
Certain that they had seen the last of DeVoe, Clark, Bart, Jones, and Superman headed back to Earth-21, while Barry, Kara, and J'onn returned to Earth-38. Harry, Jesse, and Jay returned to their respective Earths as well.
In Star City, Oliver Queen, Roy Harper, and Sara Lance were now the only full-time members of Team Arrow, while Oliver's girlfriend and Sara's sister, Laurel Lance, had decided to focus primarily on her job as a district attorney and helping Oliver raise his son, William, and Rene Ramirez's daughter, Zoe. As for Thea, she was still retired from vigilantism for the most part and her relationship with Roy was stronger than ever.
A week after Oliver had returned from helping stop the mind-control disaster on the other Earths, he and his team uncovered the crimes of a local FBI agent Samanda Watson, who was guilty of bribery, extortion, fraud, and perjury. After Oliver as the Green Arrow made her confess, Watson was detained and incarcerated at Iron Heights.
A week after that, Oliver took down James Midas, the corrupt CEO of Midas Medical who sold bullets containing chlormethine to gangs.
A month after that, Team Arrow encountered a new enemy named Cayden James, a hacktivist who was determined to exact revenge on Green Arrow, whom he believed was responsible for the death of his son Owen Post, unaware that the actual killer was someone else. In pursuit of his goals, Cayden recruited several allies into his criminal cabal: Joe Wilson, Danny Brickwell, Derek Sampson, Anatoly Knyazev (who was, in fact, a mole secretly helping Team Arrow), Sheck, and a mysterious masked woman in black and red whose identity was unknown.
Cayden sought to take control of Star City's entire infrastructure and destroy the city with a thermobaric bomb, taking away everything and everyone that Oliver held dear as part of his vengeance against the emerald archer. Ultimately, Cayden's plans failed as he and some of the members of his cabal were defeated by Oliver, Roy, Sara, and Slade, ending with Sheck shot dead by Anatoly, Brick killed by Slade when the latter slit the former's throat with his sword, and Sampson killed by Sara snapping his neck, while Joe Wilson and the masked woman managed to escape the scene.
Shortly after Cayden was taken into custody at SCPD, he was visited and killed by the masked woman, who turned out to be Emiko Adachi, Oliver's long-lost half-sister who was the daughter of the late Robert Queen and a woman named Kazumi Adachi. She was the true mastermind behind everything that had happened, since it was her who had killed Owen Post, while dressed in a Green Arrow suit identical to Oliver's, in order to manipulate Cayden into going after her brother, whom she, too, wanted revenge on for Robert abandoning her and her mother as a child, which resulted in Emiko's intense bitterness and hatred towards the Queen family. On top of her vendetta against Oliver, Emiko also sought to hunt down her mother's murderer and eventually discovered that it was none other than her mentor and fellow Ninth Circle member, Dante, who had Kazumi killed, leading to Emiko killing Dante out of revenge.
When Oliver and his team learned who Emiko really was, they initially tried to reason with her, hoping to reach the part of Emiko that could be redeemed, only to realize that she was far too gone and deep in her obsession with getting back at Robert through Oliver for supposedly ruining her life, even going as far as finishing what Cayden James had started by plotting to destroy Star City just to get back at one family. Thus, she needed to be stopped by whatever means necessary.
The final battle of this conflict consisted of Oliver, Roy, Sara, Laurel, Thea, Slade, Nyssa, and Talia taking on Emiko, Joe Wilson, Virgil, Beatrice, and the army of Ninth Circle assassins, ending with Emiko and Joe taken into A.R.G.U.S. custody after getting defeated in battle by Oliver and Slade respectively, while the Ninth Circle members Virgil and Beatrice had been killed Sara and the al Ghul sisters respectively, finally putting an end to the most recent threat of Star City.
On Earth-38, Barry Allen and Kara Danvers continued to protect National City and other parts of the world as The Flash and Supergirl respectively, while the latter's cousin, Clark Kent aka Superman, did the same in Metropolis, even as the three heroes were met with distrust and criticism from many residents due to the destruction of properly caused by the battles of the mind-controlled heroes. Kara's aunt, Astra, adjusted surprisingly well at the D.E.O., despite having to deal with wariness from many of its agents and tension with Alex whenever the two women occupied the same room, although Astra had forgiven her niece's adoptive sister for killing her as she understood that Alex only did it to save J'onn's life.
A few months after the mind-control disaster, The Flash, Supergirl, and their allies had to deal with a new threat in the form of the Children of Liberty, an anti-alien movement led by former college professor Ben Lockwood, whose father had been killed in the destruction caused by Supergirl's all-out battle with her Earth-78 counterpart, resulting in his dislike for aliens increasing to an extreme degree. Lockwood and his Children of Liberty were aided by Mercy Graves and her brother, Otis, who both used to work for Lex Luthor. Working together, Lockwood and the Grave siblings exposed President Olivia Marsdin's alien nature to the public, leading to her resigning from office, and deployed the device that Supergirl had previously used to defeat the Daxamites, filling it with kryptonite and releasing the poisonous green mineral into the Earth's atmosphere. As the kryptonite nearly killed Kara and Astra, Barry and J'onn took the two Kryptonian women to Earth-21, where Clark took them to his Fortess of Solitude, using its technology to filter the kryptonite from Kara and Astra's bodies. Barry and J'onn headed back to Earth-38, while Kara and Astra remained on Earth-21 until, thanks to the efforts of Lena, Winn, Harry, and Cisco, Earth-38's atmosphere was cleared of all the kryptonite. Conveniently enough, Clark of Earth-38 had been on a mission in deep space during the entire ordeal, so he didn't get affected.
Although Mercy and Otis were killed by one of the aliens they had captured, the Children of Liberty continued their war against aliens until Lockwood was incarcerated for his crimes after his identity as 'Agent Liberty' was revealed to the public.
Barry, Kara, and J'onn then crossed paths with Manchester Black, a ruthless and vengeful vigilante whose alien fiancee had been captured and killed by Lockwood. Initially, Manchester teamed up with the heroes while dealing with the Children of Liberty, but they were turned off by his extreme and lethal methods, especially since Manchester clearly enjoyed the brutal violence he inflicted on his victims and tended to leave collateral damage in his wake. Manchester was stopped and sent to prison for his troubles, only to escape several weeks later and form a vigilante team with three other criminals called The Elite, who went on to kill anyone they perceived as 'wrong-doers' and attack corrupt government institutions in the name of 'justice' while stealing treasures as a 'fee' for their self-proclaimed 'heroism'.
During the conflict with Manchester and The Elite, the heroes gained a new ally: Kara's friend and fellow CatCo reporter, Nia Nal, a human-Naltorian hybrid who had decided to embrace her powers and become the superheroine known as Dreamer.
The Elite was finally brought to an end when Manchester was killed by J'onn, who had grown increasingly fed up with the former's cruel actions and mind games, while the remaining members of the radical vigilante group were taken into custody at the D.E.O.
The "Multiversal Clashes" in the last story occurred in October 2018, so the events summarized in this chapter would take place in late 2018/early 2019, meaning the stuff with DeVoe occurred a year later here and, since he never got the chance to bring down the S.T.A.R. Labs satellite, no Cicada.
For Arrow, the Cayden James mess still eventually happened, but (like DeVoe) a year later and with Emiko essentially filling the role of Ricardo Diaz, who had already been killed off earlier in this series and was a relatively minor enemy compared to his canon status.
For the Earth-38 stuff, a lot of it is similar to Supergirl Season 4 (but with Barry added obviously), except that Ben Lockwood and the Children of Liberty weren't as influential as they were in canon (since Lex isn't around to pull their strings), so their downfall happened right when Lockwood was arrested in 4x08. The stuff with Manchester Black and The Elite still occurred, while Red Daughter was never created as Reign's defeat, as shown in "Alternate Events 2: One Year Later", happened very differently.