Crisis of 2392

"December 10, 2392. On that day he will answer the call and make the ultimate sacrifice. Soon, this world will fight for the fate of all the known universes."

— Mar Novu warning Barry Allen and Iris West-Allen the Crisis is near in Time Vault

The Anti-Monitor Crisis, the World Wide Crisis, the Crisis of Infinite Worlds, or simply the Crisis and also known as the Crisis of 2392, was a massive, apocalyptic event that encompassed the cataclysmic destruction of every single Earth in the multiverse by the Anti-Monitor's wave of antimatter, leaving only the chosen Paragons as the last survivors.

Oliver Queen would later on become the Spectre, gather the Paragons and reform the multiverse and a new universe that is a merged Earth-1, Earth-38, and Earth-TUD5 to Earth-Prime before an alliance of heroic teams banished the Anti-Monitor to an eternity of shrinking. This also resulted in the formation of The League in order to put down further threats to the new multiverse.

In the original timeline, the Crisis took place on the night of April 25, 2397, where the Flash fought his nemesis, the Reverse-Flash, with the help of his allies in an extreme street battle in Central City. The fight ended with the speedsters disappearing in an explosion of light. It is believed that they both traveled back in time to March 18, 2371, creating the current timeline, resulting in a temporal loop that allows the Crisis to happen in every timeline regardless, except the Flashpoint timeline.

Due to a change in the timeline in which Team Flash destroyed Cicada's dagger in 2392, the Crisis occurred much earlier, from December 10, 2392 through January 2393. However, it appears that the Crisis itself changed as well, as neither the fight with the Reverse-Flash or the vanishing of Earth-1's Flash happened in the current timeline.

History

Novu's plan

Earth-90 — Mar Novu began testing Earths to find one that can save the multiverse in the Crisis

Around 7980 B.C., on the planet Maltus, Mar Novu was experimenting with time-travel to witness the birth of the universe, only to accidentally end up in the antimatter universe and reveal the multiverse's existence to his antimatter doppelgänger, Mobius. He learned that the Crisis was supposed to happen in 2397. In preparation, he built Quantum Towers on several Earths to defend against the attack. He began testing different Earths throughout the multiverse by bestowing the Book of Destiny to an individual from the Earth he was testing, and let them create their own Elseworlds.

Original timeline

Pre-Crisis

Barry's future suit — After several encounters, Eobard planned to kill Barry as a child

Sometime in the 26th century, a speedster named Eobard Thawne/Reverse-Flash began to study the life of his archenemy Barry Allen/The Flash, after he somehow discovered his true name and acquired knowledge of his parents and loved ones; Nora Allen, Henry Allen, Iris West-Allen and his daughter Nora West-Allen (the latter of whom was presumably named Dawn in his timeline). When he gained knowledge about everything from Barry's life, Eobard decided the best way to defeat Flash was to murder Barry as a child. However, before he did this, he wanted to have a last encounter with his arch-enemy.

The event

Shadow Demons army — Thawne gained, or asked, help for Anti-Monitor and he let the shadow demons help Thawne in his battle against the heroes

Somehow the Anti-Monitor was freed and the Crisis began, prompting Novu to gather the heroes to help him save the multiverse. During this, Thawne having gained help from the Anti-Monitor's shadow demons, arrived to April 25, 2397 and gained the attention of the Flash and his allies; Oliver Queen/Green Arrow, Kendra Saunders/Hawkgirl and Ray Palmer/The Atom; according to Iris West-Allen in 2449, some sources describing the battle claimed that the Flash was instead aided by Kate Kane/Batwoman, Red Arrow, Ralph Dibny/Elongated Man and Kara Danvers/Supergirl. They started fighting on the streets of Central City, causing the most destruction the city had seen since the Flash first arrived. The fight (and possibly the antimatter) caused the sky to turn a deep crimson color.

At some point during the battle, while Green Arrow yelled in the background, the Flash recorded a message for his daughter to see in the future, knowing that he had little time left.

The battle caused several shuttles to start leaking their contents onto the streets and caused power outages spread over 20 blocks throughout the city. The Atom left the fight and aided the Central City SCIS Department in evacuating all the nearby buildings during the power outage. The speedsters then started battling over two overturned tanker shuttle, and the lightning emitted from them caused the oil from one of them to ignite. While surrounded by smoke both speedsters had a very heated conversation on an unknown matter, and then the two sped off leaving Green Arrow, the Atom, and Hawkgirl behind. The two then continued their fight up and down an unknown avenue before they vanished in a flash of light.

From here there is enough evidence to believe the Anti-Monitor was defeated by the Flash's remaining allies after he vanished, as there were shadow demons and Mar Novu was preparing for this Crisis just like the one in the current timeline.

The Flash vs — Both speedsters fighting each other

Unknown to everyone, during the explosion, the Reverse-Flash traveled back in time to March 18, 2371 to kill his nemesis as a child (like he planned before). However, the Flash followed his nemesis back through time. The two fought inside the Allen house around Nora Allen, each landing solid hits on the other, but their skills were fairly equal. Eventually, the future Flash proved to be the better of the two. When the 11-year-old Barry came into the room, Nora was in the center of it, surrounded by streaks of yellow and red lightning and caught a brief glimpse of the Reverse Flash's face.

During the fight, the Flash saw his youngerr-self from 2388 during his first trip into the past and signaled him not to interfere, because of what would happen to the timeline if he did. As the Reverse-Flash moved in for the kill, the future Flash intervened and transported his younger self to safety 20 blocks away, much to the Reverse Flash's outrage. However, Reverse-Flash quickly theorized another way to achieve his goal: to kill Nora and frame Henry Allen for the crime in the hopes that such a tragedy would traumatize Barry enough that he would never achieve his destiny, and Eobard would be free to return to a future without the Flash, so he grabbed a kitchen knife and stabbed Nora in the heart and fled the scene to return to his own time which he hoped would now be one without the Flash.

Post-Crisis

Originally, a news report from the Central City Citizen was published and written by Evan Gibson, and later its founder Iris West-Allen, which Eobard later used as the basis to see if the future remained intact.

When Farooq Gibran drained the Flash of his powers, the article changed to have no references of the Flash, although it still had the “Red Skies Vanish” section. After the Flash regained his speed and Blackout was defeated, it reverted back to normal.

After Flashpoint, Savitar killed Iris and continued the loop of his existence, causing Julie Greer to be hired and to replace Iris with writing the article. However, thanks to the efforts of Team Flash that caused Savitar to be erased from existence, Iris's name was once again restored as the author of the article.

According to an article from the Citizen in 2449 that Nora West-Allen presented to Barry, the Flash was still missing 25 years after the Crisis. Roger Hayden/Psycho-Pirate, said that during this crisis, entire worlds lived and died, implying that the Crisis was more than just a fight between the Reverse-Flash and the Flash.

Fate of the Flash

While it is known that Eobard Thawne wasn't able to return to his time period after killing Nora Allen and thus had to spend the next 15 years of his life in the 24th century, the fate of the future Flash that followed him back to 2397 after saving his younger self from Thawne is still unclear.

One possibility is that after saving his 11-year-old self, the future Flash ran back to 2397 where he stopped the antimatter wave by running fast enough but dying in the process, as seen happening in Barry's final vision of Crisis in A Flash of the Lightning and to Earth-90's Flash.

Novu's precognition of Barry's death — Novu's precognition of The Flash's death

This possibility is supported by the fact that once the date of the Crisis was moved to 2392, Barry Allen could no longer travel past that point because of the antimatter wave, while previously he and other speedsters were able to travel past 2397.

If the Flash had sacrificed himself in the original 2397 Crisis to stop the antimatter wave, all Earths, or at least Earth-1, would not have been destroyed and thus travel past the point of the Crisis would be possible. However, Roger Hayden/Psycho-Pirate's statement that entire worlds lived and died implies certain events that happened in the later iteration of the Crisis, such as Earth-2's destruction, still occurred.

Another possibility is that after the future Barry Allen saved himself from his rival's wrath, Eobard's idea to kill Nora Allen to prevent Barry from becoming the Flash worked well enough that Barry was erased from existence. This is supported by the fact that Eobard lost enough contact with the Speed Force to travel back to his time, so he had to re-create the Flash who would no longer exist in this timeline.

It's also important to note that in the erased timeline where the article was written by a Julie Greer and Iris West was killed by Savitar, when Barry vanished in that version of the Crisis after his fight with Reverse-Flash, he was definitely still alive as he was able to send a message to Rip Hunter about Flashpoint in 2456 when he was about 66-67 years old. So it's possible he wasn't killed or erased from existence and just lost his powers (because of Eobard's actions in the past), trapping him in some unknown point in time unable to harness the Speed Force to return to 2397.

Erased timeline

In the news report that chronicled the Crisis. The sky turned a deep crimson color, on December 10, 2392, when the Crisis hit Earth-1, the battle to save it took place within Central City and included the likes of The Flash, Green Arrow, Red Arrow, White Canary, Supergirl, Batwoman, and numerous other "legendary heroes" against the Reverse-Flash at midnight. The Flash and the Reverse-Flash vanished in a flash of light, and Oliver Queen the Green Arrow died in the Crisis.

Post-Crisis

In an erased future, after his death, Oliver Queen was buried next to his father and his paternal half-sister, his tombstone will read that he was a "beloved husband, brother, father and son. Hero of Star City. The Green Arrow".

Current timeline

Pre-Crisis

Test for heroes of the multiverse

In 2391, Novu tested the Earth-90 and like many others, it failed and was destroyed. After this, he traveled to Earth-1 to test it by bestowing the book to John Deegan. He was genuinely impressed when the heroes of that Earth were able to steal the Book Of Destiny, something that had never happened before. He started to respect Earth-1 even more when Oliver Queen came to confront him, in his realm, without any sign of fear, demanding him to change the destiny of Barry Allen and Kara Danvers. Impressed by the heroes of Earth-1, with Queen in particular, as well as some heroes of Earth-38, Novu gave him the means to save the two, but in exchange for helping him deal with the Crisis when the time comes. In mid-2392, Team Flash, with the help of Nora West-Allen from 2449 and the manipulation of Eobard Thawne, managed to destroy Cicada's lightning dagger. Those actions resulted in many changes to the timeline, including the change of the date of the crisis from 2397 to 2392. This forced Novu to take action to prevent the Crisis far sooner, causing him to pick up Oliver much faster than he initially told Oliver he would in order to have him complete missions to delay the crisis until his preparations are fully completed. Around that time, Novu looked into the future and found out Oliver will die during the Crisis, which he told Oliver. He also destroyed the plinth in the Time Vault to prevent Team Flash from learning about the much faster crisis so that when the time came, he could tell them personally.

Novu also retrieved Lex Luthor's corpse and brought him back to life so he would use his intellect in the crisis but confined him in his realm apparently to prevent him from trying anything malicious.

Oliver's mission

Novu first sent Oliver to Earth-2 to retrieve Dwarf star particles. Although he experienced problems doing so because of Tommy Merlyn's mission to destroy the Glades using the Dwarf star particles, he eventually succeeded. However, due to him interfering with the events of the alternate Earth it was destroyed by a wave of antimatter.

Displeased but still tolerating Oliver's tendency to let his feelings get over him, Novu brought Oliver, Diggle, and Laurel to Hong Kong and tasked them to find Dr. Robert Wong. Although Wong was retrieved, Oliver defied Novu by sending him to A.R.G.U.S but as Lyla Michaels was Novu's ally, the Monitor simply contacted her and she gave him Wong straight away.

Not concerned at all by Oliver's decision to defy and destroy him out a false belief that he was causing the crisis, Novu simply integrated Oliver's plans into his own and to reward Oliver's determination, he brought his kids and Connor Hawke from 2040 to the present day. Since Laurel was not supposed to have survived, Novu decided to test her next. He approached her and offered to restore her Earth if she betrayed Oliver. However, Laurel ultimately refused, which was Novu's plan originally. To reward Laurel, Novu put her and Oliver in an alternate reality where Laurel could say goodbye to Quentin Lance. The alternate reality also served to teach Oliver that he could not alter his fate.

Once both completed their tasks, Novu brought them to Lian Yu. Their goal on the island was to create a device to power a weapon. The device, however, only responded to Lyla's DNA. When she touched it, she suddenly had an epiphany and realized she had to go.

Team Flash's preparation

Around the same time, Novu went to S.T.A.R. Labs to inform Barry and Iris that Barry was now going to sacrifice his life on December 10, 2392. It was at this point they discovered the article changed. Now knowing about his upcoming death, Barry decided to prepare Team Flash for protecting Central City without him.

After preparing Frost, Barry put his focus on Cisco Ramon, who he decided is the perfect guy to replace him as team leader after he is gone. Although at the beginning Cisco refused to accept Barry's death, he eventually learned to do so.

After that, Barry decided to promote Ralph Dibny to his successor as the official protector of Central City after his death, which he did after a mission to get more information on Sue Dearbon's disappearance.

J'onn J'onzz's test

Having witnessed J'onn J'onzz fight but knowing that he was plagued by his past, Novu traveled to Earth-38 and released J'onn's brother, Malefic, from the Phantom Zone. After multiple encounters between Malefic and the Superfriends, J'onn learned to make amends with both his past and brother, which eventually resulted in Malefic forgiving him.

Novu then returned to Earth-38 once J'onn had completed his test, claiming that he was now ready for the Crisis.

Harrison Nash Wells's mistake

"You nearly damned us all to Hell, Nash Wells!"

— J'onn J'onzz

On December 9 in Central City, Harrison Nash Wells, after having been attacked by a Blood Brother outside a door to what he believed was the Monitor's realm, was saved when Allegra Garcia used her powers to spread a cure to the city. Wells, however, misattributed this to Novu himself. At 11:58 pm, just as Nash was about to open the portal to his realm, a voice that sounded like Novu noted on how he wished to know the truth and offered to reveal to him what he wanted to know in exchange for his help stopping the Crisis. The voice told him to stop his attempts to kill him and begin a new life. When Nash asked the voice to show him, he was told that he already has "the knowledge" (probably to solve a code). After Nash solved the code in the cave, the rock opened and pulled Nash inside it in a flash of light before slamming down the rock wall again. However, in doing this, Nash accidentally released the Anti-Monitor instead and became a Pariah.

Evacuation of Earth-38

Team Flash witness the beginning of Crisis — Team Flash witnessing the beginning of The Crisis in Central City

As the Crisis began on December 10, the skies above Lian Yu, Central City, and possibly the entire planet began storming and turned red. On Mar Novu's command, Harbinger arrived on Lian Yu to retrieve Oliver and Mia. At midnight in Central City, Team Flash watches the skies turn red and prepare themselves for the upcoming battle.

Lyla then warped all the greatest heroes of Earth-1 to Earth-38, where Argo City had just been destroyed by an antimatter wave, and the heroes worked with the rest of Earth-38 heroes to evacuate as much of the universe's population as possible. As the battle between the heroes and the shadow demons of the Anti-Monitor continued to prove fruitless as more and more kept coming, the Monitor arrived to announce that the battle was lost and they must escape. Novu breached all of the heroes away, with the exception of Oliver Queen, who immobilized him temporarily using an antimatter arrow and fought off the shadow demons long enough for 3 billion people to escape to Earth-1.

Oliver's valiant act of heroism however caused him to sustain mortal injuries in process, until the Monitor teleported them to Earth-38, where Oliver said his last words to his comrades and daughter before dying, fulfilling Novu's prophecy of Oliver dying in the Crisis, but not the same way that Novu had foreseen. As the surviving heroes mourned the loss of their comrade, Harrison Nash Wells, now a branded a Pariah for his actions, teleported in garbed in a suit of green and gold armour, declaring that all was lost. Meanwhile, the Anti-Monitor's antimatter wave continued to flood across the multiverse, sowing massive chaos and instability and even causing the Pillars of Magic to crumble, effectively robbing individuals like John Constantine of the ability to use magic on a continuing basis.

Finding the Seven Paragons

Unable to match the Anti-Monitor's armies or raw power, Novu and Harbinger set up the remaining heroes on the Waverider of Earth-74 as a base of operations with that Earth's Mick Rory while the Earth-1 Legends remained on the front lines. Novu informed the shaken heroes that there existed seven Paragons; seven special heroes who each exemplified a particular heroic trait above all others. He named Sara as the Paragon of Destiny and Kara as the Paragon of Hope. On Earth-18, Sara, Barry, Mia, and John Constantine take Oliver's body to a Lazarus Pit in an attempt to resurrect him, but the accumulating antimatter across the multiverse prevents them from bringing his soul back. Eventually, the remaining Paragons were located, with Ivy Town resident Ryan Choi as the Paragon of Humanity, Barry Allen as the Paragon of Love, Kate Kane as the Paragon of Courage, J'onn J'onzz as the Paragon of Honor, and Clark Kent as the Paragon of Truth. Unbeknownst to everyone, Harbinger is secretly contacted by the Anti-Monitor.

In trying to locate the Anti-Monitor's base of operations, Cisco Ramon, Caitlin Snow, and Barry, with the help of Pariah, discovered a hidden room within the Central City sewers that contained a treadmill which was the source of the antimatter wave. Barry soon realized that his counterpart from Earth-90 was powering the treadmill with his super-speed, being forced by the Anti-Monitor to do so against his will. After he was removed from the device by Cisco, Barry-90 warned that the multiverse would be destroyed entirely if he failed to continue powering the treadmill. In order to offset this destruction, Pariah brought Jefferson Pierce/Black Lightning to Earth-1, having him use his powers to temporarily contain the process.

After it was revealed that in order to permanently stop the antimatter wave, a speedster would have to run in the opposite direction of the treadmill and die in the process, Barry-90 transferred Barry-1's speed to himself and did the deed, stopping the wave and averting Barry-1's foretold sacrifice albeit at the cost of his own life. Meanwhile, Constantine, Mia, and Diggle visit Lucifer on Earth-666 to get his help in entering Purgatory and retrieve Oliver's soul. Before they can leave, Jim Corrigan appears so he can bestow onto Oliver the Spectre's power. Oliver accepts, and Constantine's team is sent back to the Waverider without him. While the heroes regroup, the Anti-Monitor sends a brainwashed Harbinger to kill the Monitor so he can absorb his power and finish destroying the multiverse. Before the remaining heroes and Earth-1 are destroyed, Pariah sends the Paragons to the Vanishing Point to keep them safe, where they witness Lex replace Superman-96 with himself using a page from the Book of Destiny.

Battle at the dawn of time

In the months since the multiverse was destroyed, the Paragons have struggled to survive. Once Corrigan teaches him how to use the Spectre's power, Oliver heads to the Vanishing Point to rescue the Paragons and strengthen Barry's powers. With his increased speed, Barry drops off Kara, Choi, and Lex on Maltus, but gets attacked by the Anti-Monitor, losing everyone else across the Speed Force. Despite an expected double-cross from Lex, Kara, and Choi convince Novu not to go through with his plans. Once Barry retrieves everyone, they arrive at the dawn of time, only to learn the Anti-Monitor will always learn of the multiverse's existence no matter what, as there will always be a Novu in the multiverse who cannot give up his ambitions. The Paragons battle the Anti-Monitor and his shadow demons until Oliver uses the Spectre's power to restore the multiverse, with the Paragons providing additional assistance via Lex's Book of Destiny page. As a result however, Oliver dies a second and final time in Barry and Sara's arms.

Rebirth of the multiverse

"When we restarted the universe, our worlds combined, and only we Paragons know it was ever any different."

— J'onn J'onzz to Sara Lance and Ray Palmer

Waking up in the newly recreated universe, the Paragons discover they are the only ones who remember the Crisis and that both Earth-38 and Jefferson's Earth have been merged with Earth-1 into a composite universe later designated as Earth-Prime; among other changes throughout the multiverse. While J'onn uses his psionic powers to bring their allies up to speed, Sara attempts to find Oliver, though without success; not even Oliver's corpse existed.

Victory

"I am destiny incarnate. Immeasurable and inescapable. You are nothing; insects, fates to be crushed beneath my heel without a moment's thought. Fighting is useless. Surrender."
"Not today; not ever. Oliver died so we could continue to fight. He sacrificed everything for this new world and we will not fail him. We will not fail this world. For Oliver."
"For Oliver."
"For Oliver"
"For Oliver!""

— Anti-Monitor, Sara, Kara, Barry and Diggle

Later that night, the Paragons are attacked by shadow demons. Upon finding a restored and remorseful Nash, he discovers that the Anti-Monitor is still alive and plotting to renew his destruction of the multiverse. Supergirl, Superman, J'onn, Dreamer, Flash, Wild Dog, Spartan, Batwoman and White Canary fight off shadow demons until they converge into the Anti-Monitor. After failing to break their wills, he fights them until it becomws vexing. Growing to gigantic size, Anti-Monitor was delayed by rhe Supers and J'onn to allow their allies to devise a way to get rid of him. To stop him once and for all, Nash, Ray, Barry, and Choi work to develop a bomb capable of shrinking the Anti-Monitor for eternity while the other heroes distract him. Once it's finished, Kara uses it on the Anti-Monitor and sends him to the microverse.

Aftermath

"I figure we could all use this to gather if anything ever happens again."
"[...]"
"Why do we even need it? I mean how often does the world almost come to an end?"
"..."
"Oh. It's like that?"

— Barry Allen and Jefferson Pierce

Sometime later, Barry, Kara, Sara, Kate, Clark, J'onn, and Jefferson hold a memorial service for Oliver before agreeing to come together as a league of heroes to protect their new world in Oliver's memory.

A handful of doppelgangers made it to Earth-Prime, including one Beth Kane, Al and Winn Schott Jr, four Brainiac 5s and a trio of Kryptonian Witches.

Once scattered throughout the multiverse, the rings of the Fates were now on one Earth and able to create the Loom of Fate; the deities were able to rewrite reality as Loomworld, but were ultimately stopped by the Legends.

During the Anti-Monitor Crisis, the Phantom Zone became fractured, but the Superfriends used the Tower as a ship to travel the Phantom Zone and free Supergirl, in which they succeeded.

The Crisis ranked as the scariest time in Barry Allen's life.

When Jefferson was feeling down to the point of writing his will, Lynn Stewart reminded him that he helped to save the multiverse to cheer him up.

The Crisis destroyed Earth-TUD22, causing John Henry Irons and his daughter Natalie to take refuge on Earth-TUD25.

Changes caused by the Crisis

"In the meantime, I wouldn't mind knowing everything that Crisis changed before I run back into the field."
"Calculating...calculating... calculating. [...] Analysis complete, Barry Allen. I've calculated approximately 3.725 trillion changes. Would you like to hear them in order of causality?"

— Barry Allen and Gideon

Following the Crisis, with the multiverse having been reborn, not everything remained the same. According to Gideon, there are about 3.725 trillion changes to reality as a result of the Crisis. Some are evident, such as:

Elements of Earth-1, Earth-38, and Earth-TUD5 were recreated in Earth-Prime, to such a convincing extent that the Paragons, who are natives of the former two, consider the worlds to have merged, as do other Earth-Prime residents who were given back or otherwise retained their memories from one of these universes. In this regard, Barry Allen and Kara Danvers were only able to tell the difference when they encountered each other in National City, and Sara Lance could not tell the difference at all until Ray Palmer expressed surprise that Supergirl had her own Earth.

"Why are we the only two that remember?"

""What are we that they are not?"
Paragons."

—Kara Danvers and J'onn J'onzz

Most inhabitants of Earth-Prime were unaware of any changes to their existence, with the exception of selected individuals (primarily direct allies of the Paragons) being made aware of the changes through a direct mind link with J'onn J'onzz, something considered too dangerous for J'onn to attempt on a wide scale. In addition, an agreement between Lex Luthor and the Monitor resulted in Lena Luthor retaining her pre-Crisis memories.
L-Corp was erased from existence, and Lex Luthor is still the owner of Luthor Corp, as well as the Department of Extranormal Operations, which is now a subsidiary of LuthorCorp.

"People think he's a good guy?"

"Kara, we're talking about Lex Luthor. He's the best guy."

—Kara Danvers and Alex Danvers

Lex Luthor is seen by the public as a good person on Earth-Prime, even receiving a Nobel Peace Prize.
The reincarnated John Diggle and Lyla Michaels now have two children: Sara Diggle originally from the Earth-1 pre-Flashpoint timeline, and John Diggle, Jr. originally from the post-Flashpoint timeline.
Rather than having just one son (Jonathan Kent), Lois Lane and Clark Kent have at least two children that are male.
The universes are clearly not separated in the same way they were in the old multiverse, as Querl Dox was unable to detect the other universes through their vibrational frequency.
Instead of not being able to use her sonic scream after getting her throat slit as using it inflicts pain, Dinah Drake has had her powers restored to its full extent (at least as of 2411) as she was seen using them in the future.
Rather than witnessing the death of his mother at the hands of Slade Wilson, Oliver manages to save Moira Queen. Additionally, Tommy Merlyn, Emiko Adachi, and Quentin Lance are still alive in 2393, and do not meet the same fates as they did on Earth-1 in the original multiverse.
- Tommy married Laurel Lance. However, she would still die at some point prior to the Crisis.
Hong Kong is infected by the Alpha-Omega virus in 2375 instead of 2376. (According to Cisco's timeline)
The Legends formed in 2388 instead of 2389. (According to Cisco's timeline)

"Not a single one of our doppelgängers survived to make it to Earth-Prime, as far as I can tell, but we did manage to pick up a butt-ton of bad guys and aliens and more metas, and you know the best part? The best part is a bunch of our old villains are back, with fresh paint jobs!"

— Cisco Ramon

A number of super-villains apprehended by Team Flash on Earth-1 are now free on Earth-Prime, for instance Weather Witch, who attacked National City shortly after the Paragons were brought to Earth-Prime.
- Some former allies, like Pied Piper, never reformed, remaining as villains.
  - Pied Piper now has the ability to generate a sonic scream, which he can use to fly.
The Paragons, who possess memories of their pre-Crisis lives do not have full memories of their activities on Earth-Prime prior to the Crisis; for example, Supergirl has no memory of willingly filming a TV commercial with Lex and Lena to promote the D.E.O. Additionally, it seems that when individuals have their memories restored by J'onn, it overwrites any memories of their activities on Earth-Prime, as Cisco could not remember owning a Superman shirt, and Alex Danvers did not remember that the D.E.O. had Lexosuits but not anti-Kryptonite equipment, things they would have remembered if J'onn did not restore their memories. Possibly because of this, Cisco (in a possible future) creates a device that allows both the pre-Crisis and Earth-Prime memories to coexist, as seen with Mia Smoak.
The layout of Central City is significantly different. For example, the cemetery where Barry's parents are buried in a completely different part of the city compared to the pre-Crisis timeline.