FH 06:36, February 9, 2018 (UTC)
To protect Earth-1 and beyond from threats that no hero could stand alone. They also fight crime in the name of justice.
Barry goes to stop a bank robbery, but is too late to catch the robber. However, he notices that the people in the bank are for some reason, extremely aggressive with each other for a few minutes. During a meeting, Eddie mentions catching The Flash due to him being a number 2 LIL at the crime scene, thinking his intentions getting around is suspicious, though this was rejected by the captain. After talking with them, he took the captain's food before heading to S.T.A.R. labs. Caitlin also gave some advice to Barry about involving Iris whether as the Flash or as Barry.
The police department is able to find the robber via tracer that was hidden in the money. When the police find the robber in a warehouse, one of the officers looks at the robber straight in the eye, causing the officer to become aggressive, and starts attacking the other officers. Barry, as Flash, goes to save the other officers, but hits the floor while saving Joe. Before the aggressive officer can shoot at Joe and Flash, the Arrow shoots the officer down to prevent him from shooting. The Arrow then compliments Flash on his mask before leaving.
At an old warehouse on the outskirts of Central City, Barry and Oliver meet up with Felicity and Diggle. While Diggle is in shock of Barry's speed even throwing his fries in the air, Felicity and Oliver reveal that they are in Central City trying to track down someone who uses razor-sharp boomerangs. Diggle states that he had a cousin who got struck by lightning once, but only developed a stutter. Barry suggests that they team up, but Oliver declines. Barry then takes Felicity to S.T.A.R. Labs, where Felicity works with Cisco to run tests on a boomerang that Oliver recovered. Diggle exclaims to Oliver about freaking out on Flash's speed which he just walks away. At S.T.A.R. Labs, Joe and Dr. Wells talk to Barry about how they don't trust the Arrow, but Barry does trust him and tells them they don't even know him.
The next day, Iris talks to Eddie about the Flash, who Eddie believes should not be out on the streets. At Iris' coffee shop, Oliver and Felicity meet Barry, where Oliver reveals that he found out the bank robber's name: Roy Bivolo. Iris appears giving Felicity and Oliver their coffee, she drags Barry away in private and expresses her amazement and excitement that he knows Oliver Queen. After being persuaded by Felicity, Oliver reluctantly teams up with Barry, believing that Barry only thinks he wants Oliver's help.
At the police station, Joe reveals that the Arrow showed up again last night, and Eddie tries to convince Singh to create a task force to take down the Flash. Singh turns him down, and Iris is hurt when she finds out that Eddie is against the Flash.
Later that day, Barry goes to the warehouse to train with Oliver, who tells him that when he goes into the field, he should be wary of his surroundings. He demonstrates this by shooting an arrow at Barry, who catches it before it can hit him, but gets shot in the back by two automatic crossbows.
At S.T.A.R. Labs, Felicity talks to Caitlin about a theory that different colored lights can change people's emotions, like red causing rage. They think of this because people who turned aggressive claim that before they started acting, they saw some red light. Later, Felicity talks to Dr. Wells, who asks Felicity if she can let him know who the Arrow is, so he can trust the Arrow more, Felicity refuses, saying that it is not her secret to tell. Dr. Wells accepts this, saying he will try and find out using other means.
Barry then comes some time later to S.T.A.R. Labs, and finds out where Bivolo is hiding. Against Felicity's advice, Barry goes in alone to Bivolo's hideout, where Bivolo uses his powers to use make Barry aggressive, and uses it to escape.
Back at S.T.A.R. Labs, Barry is checked by Caitlin, and claims he saw red before Bivolo escaped, yet doesn't feel aggressive. Before Barry leaves, he angrily complains to Caitlin about her constant nagging. He then goes to the warehouse where Oliver is waiting, and Barry starts on a rant against Oliver, and says he doesn't want his help anymore. Barry then goes to the police department, where Eddie is still trying to convince Singh about a task force against the Flash. Barry then starts raging towards Singh and Joe when confronted about the Bivolo case.
That night, an enraged jealous Barry, as Flash, goes to find Eddie, and is about to attack him. Joe goes to S.T.A.R. Labs, and tell the gang that Barry's eyes were glowing red, and he's raging. They decide they need to stop Barry fast, and ask Felicity to call Oliver Queen, revealing that Wells has found out that he's the Arrow, and in the process revealed Oliver's secret identity to the rest of the Flash team. Before Flash can hurt Eddie, he is pulled away by the Arrow, causing Barry to fight Oliver. As Flash and Arrow are fighting, Cisco, Diggle, and Caitlin argue who would win the fight. Oliver is eventually able to restrain Barry, allowing Joe and Dr. Wells to use a device of flashing multicolored lights to stop Barry's rage. Barry apologizes to Oliver for the things he said earlier, Oliver changes the subject and reminds Barry that they still have to catch Bivolo.
Off-camera, Bivolo is caught and placed in a particle-accelerator chamber. Oliver then explains to the Flash team why he chose to keep his identity a secret from them. Later that night, Flash goes to apologize to Iris about attacking Eddie, but believing that Eddie was right all along about him being dangerous, says to him to never contact her again. The next day, Felicity and Oliver go to the coffee shop, saying they are going back and want some coffees for the road. While Felicity and Iris get the coffees, Barry again apologizes to Oliver for the things he said in the field and reveals that he had feelings bottled up inside, but he just never realized it before. Oliver accepts his apology and assures Barry that he can always talk to him about anything, he also gives Barry advice about Iris to let her go, saying that guys like them never get the girl. Before leaving the coffee shop, Oliver sees Samantha Clayton, an old girlfriend of his. The girlfriend later talks on the phone with someone, and says she's picking a hot chocolate for them. Before hanging up, she says, "Mommy will be home soon", implying it may be Oliver's child from the Arrow episode "Seeing Red".
Oliver, Dig and Roy are at a location that is owned by the mysterious man. Both Arrow and Roy shoot at the bombs inside the home, before going inside and learn that A.R.G.U.S. were there as the boomerang man killed an A.R.G.U.S. agent. Despite being told to let it go, Arrow doesn't. Heading back to the Foundry, Felicity tells them who the victim was.
The next day, Felicity receives a visit from Cisco and Caitlin who wanted to see the foundry so she brings them there.
Dig approaches Lyla for information. At the same time, the man shows up at A.R.G.U.S. using the dead guy's id. He then injures a security guard. Lyla tells Dig that it is handled until the alarm went off. The man is killing multiple men.
Dig calls Oliver and gets them to go but Caitlin thinks that they won't get there in time. Dig and Lyla are in a gun fight.
Thea is out on her cell when the Flash sped by.
Oliver and Roy are fighting the man, when the flash shows up to help causing the man to realize he is outnumbered and leaves.
In the foundry, Barry is showing off when he speeds off for sushi. Lyla then shows up when Barry returns and reveals his identity to Lyla. Barry then helps fix the boomerangs up. Upon learning who made the boomerang, they head to talk to Lance. After learning that the man is connected to the Bratva, the team head to talk to the Bratva. Oliver begins to torture the guy for information, surprising Barry. Barry got upset about it. Barry then brings the guy to Lance before returning and talking to Oliver about his tactics. When Oliver talks about his tragedies, Barry mentions about seeing his mother die. Oliver then tells him if his way is too hard that he knows his way home.
In the foundry, Lyla approaches Oliver to talk about his relationship with Barry.
Dig, Cisco, and Roy were driving together discussing the meta human issue. Cisco however brings up Lyla as Dig's "wife" to which Roy and Dig say that she isn't the wife.
Oliver and Barry arrive at the location and they learn that Digger isn't there but left behind a phone.
In the Foundry, Lyla and the others learn that Digger found them and so Lyla pulls out a gun and begins shooting at Harkness. Felicity grabs a bomb but doesn't throw it until after Lyla is hit by a boomerang. Felicity is freaking out that Lyla isn't breathing.
Dig shows up along with the others and Dig asks Barry to take Lyla to a hospital.
Above in Verdant, Cisco, Roy and Felicity were hanging out when Thea brought them drinks. Roy thanks Thea for the night off. Cisco asks who Thea is and learns that she is Roy's ex and Oliver's sister. Caitlin then shows up. The Star Labs employees worry about how they are not taking it seriously as they give their bad guys nicknames.
Barry and Oliver talk about how he is trading pieces of himself to torture people. Barry tells him that he is full of crap and that Oliver is still human due to his experiences.
Felicity then enters and tells them where Harkness is. He happens to be at a train station. Barry and Oliver head there with Flash removing the innocent people before they talk to the man. He tells them that he had planted bombs around the city and gave them 90 secs for the bombs. Flash rushed off while Oliver stayed behind. Oliver hits Harkness as Flash has to figure out what to do with the bomb. Barry grabs Roy and puts him in front of one of the bombs and then does the same with Caitlin, Felicity and Cisco.
Oliver and the Captain are surprised when they stopped the bombs. The Flash shows up as Oliver doesn't kill the man but stops him from surprising him with an arrow in the back.
Dig is at the hospital when Lyla wakes up and calls her sweetie. He asks her to marry him, to which she says yes. They kiss briefly.
Caitlin promises to send them the results of the arrow that shot Sara. Barry and Oliver return and find out that Cisco had Oliver made a new costume that was better material, along with Barry having a place for his uniform for when he's in town. They promise to do something just the two of them before Barry leaves town.
Barry and Oliver head out alone to fight each other in a friendly fight. Barry tells Oliver that he can inspire people as himself.
Episodes 1, 3, 4 & 6
Cisco Ramon uses Felicity Smoak's facial recognition software to look for meta-humans outside Central City and finds evidence of Mari McCabe using her animal powers against thugs in Detroit. He nicknames her "Vixen" and gives her whereabouts to Barry Allen, who decides to take backup; he and the Arrow show up at Mari's apartment. When Barry uses her name, she panics and runs away. Flash and the Arrow chase Mari, who uses various animal powers to evade them, including speed, wall-climbing, camouflage, and flight. They eventually talk; Mari explains she was not in Central City for the particle accelerator explosion, a fact confirmed by Felicity Smoak, and refuses their offer of help, threatening them with violence if they return. Flash and the Arrow visit Mari again, offering to help train her if she intends to become a vigilante; she says she is but wants to work things out on her own. She asks about getting a codename and Barry says they call her "Vixen"; he lets slip Cisco's name, giving her a clue as to his identity. (Takes place around the same time as "The Offer".)
In a flashback to his time infiltrating Baron Reiter's operation on Lian Yu, Oliver Queen meets John Constantine, saving his life while he is retrieving the Orb of Horus. In the present, Oliver calls in this favour from John to restore the soul of Sara Lance, who has been resurrected from the dead by the Lazarus Pit.
Episodes 1, 4, 5 & 6
After Mari confronted Dr. Macalester about his role in Kuasa's plot to steal her totem, Cisco contacts her to assist the Flash and Firestorm to stop Mark Mardon from causing havoc at Monument Point. After being placed in a coma by Mardon, Mari awakens with Chuck at her side. Soon she discovers that another totem from Zambesi Village was stolen. Mari discovers that Benatu Eshu is responsible for the heist and he uses the totem's pyrokinetic abilities against her. Mari seeks out Kuasa and discovers that Eshu was responsible for the massacre of most of the Zambesi in search of the magic totems. With the help of Felicity, the sisters reluctantly work together and they find the Zambesei water totem. After Kuasa's attempt at betrayal is thwarted by Mari, the Atom and Black Canary, they together battle Eshu. Mari defeats (and possibly unintentionally drowns) Eshu, at the cost of Kuasa's life. After the fire totem is destroyed, Vixen meets up with Flash, Green Arrow, Black Canary, and Atom at Coast City, feeling that in Detroit or out, it is her responsibility to protect others.
Vandal Savage arrives in Central City and sets his sights on Kendra Saunders. After Vandal attacks Kendra and Cisco, they turn to Barry for help. Realizing how dangerous Vandal is, Barry takes Kendra to Star City and asks Oliver and team to hide her until he can figure out how to stop Vandal. However, things quickly go from bad to worse when a man with wings AKA Hawkman shows up and flies off with Kendra. Meanwhile, Harrison develops a serum to make Barry run faster and asks Jay to test it out.
Oliver and Barry Allen take Kendra Saunders and Carter Hall to a remote location to keep them hidden from Vandal Savage while they figure out how to defeat him. Malcolm arranges a meeting between Vandal, Green Arrow and The Flash that doesn't go as planned. Meanwhile, Felicity, Thea, Diggle and Laurel work with Team Flash to come up with a weapon powerful enough to destroy Vandal Savage.
Oliver realizes he needs help battling Damien so he calls in an old friend – Vixen. Using her magical ability to summon animal powers, Vixen gets a lock on Damien's location and the team goes to war. Meanwhile, Thea has a heart-to-heart talk with Malcolm.
While testing the Tachyon prototype to increase his speed, Barry Allen accidentally travels to Earth Thirty-Eight's National City and meets Kara Danvers, helping her to defeat the Silver Banshee and Livewire before she helps him return home split seconds after he left.
Eliza comes to town to celebrate Thanksgiving with her daughters. Alex decides it's time to come out to her mother; Kara is shocked when Eliza suggests Mon-El has feelings for her, and Winn and James consider telling Kara the truth about the Guardian. Meanwhile, Cadmus unleashes a virus that instantly kills any alien in the vicinity so Kara enlists an unexpected ally - Lena Luthor. The epic superhero crossover kicks off tonight when Barry Allen and Cisco Ramon seek Kara's help with an alien invasion on their Earth.
Barry speeds over to Star City to ask for Oliver, Felicity and Diggle's help to go after aliens known as the Dominators according to Lyla Michaels. Thea Queen wants to come out of retirement as Speedy and help too, Barry also decides to call on the Legends for their assistance and he and Cisco travel to Earth 38 for Supergirl's help too seeing as she's a alien which may help, Barry introduces her to the others especially Oliver. Ray shows Cisco his new suit then tells Barry that Snart died a hero. Felicity talks to Cisco over his anger for Barry while Martin and Jax show him the message, along with Oliver, they all discover that it's Barry telling Rip Hunter that he created Flashpoint, Caitlin takes Martin back to his home where he finds that he has a daughter while everyone trains against Supergirl whose too strong for them all, Cisco finds the message and wants Barry to tell everyone about Flashpoint, Barry tells the others especially that Diggle had a daughter, but now has a son. this creates a rift in the team, with Sara reminding Barry that she always wants to save Laurel but she knows she can't due to the implications on her friends. Ray calls Barry's Flashpoint Timeline a Time Aberration. Barry sits out of the mission with Oliver who backs him up while Kara leads the team but the mission becomes a trap and they get brainwashed and Barry and Oliver try to stop them, Wally West helps too before Supergirl hurts him. The Flash and Green Arrow are able to save their friends before some of them get taken away.
Oliver, Diggle, Thea, Sara and Ray got taken to the Dominators spaceship where they are all put to sleep under a hallucination of what would happen if Oliver, his father and Sara never got on the Queen's Gambit. They eventually discover its a dream world and battle Malcolm Merlyn, Deathstroke and Damien Darhk to escape then they wake up and battle Dominators and try to get away. Meanwhile Felicity brings Cisco to Star City where they try to find them, he meets Curtis Holt, Rory Regan and Rene Ramirez who despises Metahumans and Aliens. she asks for The Flash and Supergirl's help when they discover Dominator technology fell into the wrong hands. They take on a villain whom they nickname Cyberwoman before they find their friends and contact Nate aboard the Waverider to save them as they find out more on the plan.
Everyone except for Thea regroups in Central City. Nate joins them and reveals that he found footage from the first Dominators Invasion in 1951 and the team suggest they capture one of the Dominators to get information on their plan seeing as they took some of them first. Cisco and Felicity want to time travel in the Waverider, Nate takes Amaya Jiwe and Mick, Oliver tells Kara to sit out of the mission as he feels some normatlity needs restored. Felicity gets sick from the effects of Time Travel but she and Cisco remain on the Waverider where Felicity talks to Cisco again as she can tell that Cisco wanted to get away from Barry. Mick, Amaya and Nate go to find the Dominators. Nate tries out his new Steel Suit that Ray built him. the three Legends get captured while trying to kidnap a Dominator, they get taken by Agent Smith who in the present days tries to go after Barry, Oliver, Ray and Sara, but they overpower his agents and both teams in past and present discover that the Dominators live in fear of Metahumans due to the Justice Society of America in the past but in the present when Barry created Flashpoint as it broke a peace between them and Earth so the Dominators want Barry to surrender himself so they live in peace and they created a Meta Bomb to kill all of the Metahumans. Felicity and Cisco save their friends but when they return to 2016 Central City, Cisco discovers that he changed the timeline, This prompts him to make up and forgive Barry for creating Flashpoint resulting in Dante's death. the team try to persuade Barry not to surrender himself to the Dominators. they battle the Dominators. Sara uses the Waverider's beam to lift the Meta Bomb away so Firestorm can transmutate it. he succeeds and all of the Dominators retreat. The Teams celebrate their victory and Cisco created and interdimensional extrapolator for Kara so she could create breaches to come to their earth if they need her help or they come to her earth if ever she needed her help. Kara, Barry and Oliver have a group hug and Diggle forgives Barry before they all said goodbyes. Caitlin Snow continued to try and help Stein get through to his daughter Lily whom he reveals was the result of a time aberration he caused in 1987. he tells Jax about her after he connects with her but tells him not to tell the rest of their team.
Mon-El and J'onn J'onzz travel to Earth One carrying a comatose Kara to ask Team Flash for help. Music Meister hypnotizes Barry and sends him into the same dream world as Kara, where they are instructed to reach the end of the musical in order to leave. Wally, Cisco and J'onn confront and defeat the Music Meister. Mon-El and Iris later confront him, and he tells them the only way to bring Barry and Kara back lies within themselves. They are later able to awake them via a kiss. Music Meister then reveals his plan all along was to teach them a lesson about love, then fades away to teach his lesson to others. Kara, Mon-El and J'onn then depart for Earth Thirty-Eight.
In Earth-X, a Nazi regime rules the planet, where an archer known as Dark Arrow is the Führer. Dark Arrow seizes a temporal gateway from the Freedom Fighters, which enables inter dimensional travel to other universes. On Earth One, Barry Allen and Iris West's friends, including Kara Danvers and her adoptive sister Alex Danvers from Earth Thirty-Eight, come to Central City for Barry's and Iris' wedding. Harry Wells, Cisco Ramon, and Caitlin Snow develop a serum to separate the Firestorm matrix from Martin Stein and Jefferson Jackson; however, Jefferson is reluctant to give up being Firestorm. Alex meets the Legends' leader Sara Lance, taking the first step to recover from her break up with Maggie. Oliver re-proposes to Felicity, but she is not ready to marry him. The wedding ceremony is interrupted by invaders from Earth-X led by Dark Arrow, his Kryptonian wife Overgirl, and Prometheus. After Kara injures Overgirl, and Alex and Sara capture Prometheus during the fight, the Nazis retreat. Dark Arrow, who is Oliver's doppelgänger, and Overgirl, who is Kara's doppelgänger, unmask themselves as they discuss their next step with Eobard Thawne.
In S.T.A.R. Labs, Prometheus of Earth-X is revealed to be a parallel universe doppelgänger of Tommy Merlyn. After cruelly taunting Oliver over his attachment to Tommy, Prometheus commits suicide out of loyalty to Earth-X's Nazi regime. Harry reveals that through his exploration of the multiverse, he discovered that Earth-X is a dystopian world where World War II was not won by the Allied Forces. Prometheus' partners, Dark Arrow (Oliver's doppelgänger), Overgirl (Kara Danvers' doppelgänger), and Eobard Thawne steal a sub-light generator, the Prism, from research company Dayton Optical Systems. Oliver, Barry, Kara, and the others believe that Dark Arrow seeks to build a neutron bomb with it to aid his conquest on Earth One. After a series of battles, Harry, Cisco, Caitlin, Mick Rory, Curtis Holt, Rene Ramirez and Dinah Drake are in captivity at S.T.A.R. Labs after the Nazi forces infiltrate it, and Oliver, Barry and his allies are transported to Earth-X's concentration camp, but Kara is moved to S.T.A.R. Labs. Oliver is determined to kill Dark Arrow after his capture. The villains reveal that Overgirl is dying from too much solar radiation in her heart and Dark Arrow plans to use the Prism, charged by S.T.A.R. Labs particle accelerator, to produce artificial red sunlight that would weaken both Kara's and Overgirl's invulnerability, allowing a heart transplant for Overgirl but killing Kara in the process.
Barry, Oliver, Sara, Alex, Martin and Jax wake up in a Nazi concentration camp on Earth-X, with power dampening handcuffs. The arriving SS-Sturmbannführer is revealed to be the Earth-X doppelgänger of Quentin Lance, who takes them away for execution, before they are saved by Citizen Cold, the Earth-X doppelgänger of Leonard Snart and Ray Terrill. Snart and Terrill take them to the underground headquarter of the Freedom Fighters, where the team meets the resistance movement's leader General Winn Schott, Winn Schott's Earth-X doppelgänger. They learn that the only way back to Earth One is through a temporal gateway in a Nazi facility, which Schott plans to blow up to strand Dark Arrow on Earth One. Oliver disguises himself as Dark Arrow to infiltrate the facility and discovers the Nazi's doomsday device against parallel Earths is a militarized timeship called Wellenreiter. Oliver allows the timeship to enter Earth One to avoid jeopardizing his cover, but is ultimately exposed when he refuses to kill Felicity Smoak's Earth-X doppelgänger, a concentration camp prisoner. Oliver manages to save her from the Sturmbannführer. Barry and Ray battle the Freedom Fighters' Red Tornado to stop it from destroying the temporal gateway, while the rest of the team enters the facility. In attempting to reactivate the gateway's portal, Stein is shot and gravely wounded. Back on Earth One, Thwane prepares to perform surgery on Kara to save Overgirl at S.T.A.R. Labs. Felicity and Iris try to stop him, but are captured.
Kara, Felicity and Iris is saved from Thawne by Ray Palmer, while Nate releases everyone from the pipeline. On Earth-X, Stein activates the temporal gateway's portal before succumbing to his injuries. Jax bonds with Stein to get him through the portal, along with Barry, Oliver, Sara, Alex, Ray Terrill and Leo Snart (Leonard Snart's Earth-X doppelgänger). Members of all the teams face off against Metallo of Earth-X, while Felicity and Kara are cornered by Dark Arrow before Oliver saves them. Stein is kept alive by his connection to Jax, but it is slowly killing them both. Stein severs their connection and dies from his injuries. Jax delivers the news to Clarissa and Lily. Dark Arrow offers a truce to the team, saying they will leave in peace if the team surrenders Supergirl. Oliver refuses and the team battles the Earth-X doppelgängers and their forces. Caitlin, Amaya and Zari infiltrate the Nazi's timeship Wellenreiter to disable its shields, so Harry, piloting the Waverider with Cisco, can destroy it. Defeating Thawne, Barry allows him to escape, unwilling to kill him. Supergirl battles Overgirl, and when Overgirl goes nuclear, Kara flies her into space to detonate. Oliver subsequently kills his doppelgänger. Cisco opens a breach to Earth-X for Ray to return, with Snart choosing to stay and join the Legends. Ray also receives a device from Barry that allows him to contact Earth One directly. The team holds a funeral for Martin. The Legends, Kara and Alex depart back to their own lives. Barry and Iris are officially married by John Diggle, with Oliver and Felicity doing the same.
The Twelfth Alliance:
John Constantine infiltrates the Waverider as Sara drops off Jax as he chooses to leave the Legends. Stating that she has a debt to repay to him after he saved her soul two years ago, John requests Sara's help to face a demon that is possessing a little girl who knows about Sara.
Following the Legends' victory over Mallus, Constantine, accompanied by Gary find the Legends relaxing in Aruba and present them a severed dragon head. After confirming it was Sara's idea to release Mallus, Constantine tells them that Mallus wasn't the only demon that was released.
- The Flash/Barry Allen (co-leader; founder/leader of Team Flash, Central City forensic scientist, occasional tech support & field agent)
- Vixen/Mari McCabe (co-leader; co-guardian of Zambesi & field agent)
- John Constantine (co-leader; magic support, field agent, occult detective & consultant)
- White Canary/Sara Lance (co-leader; leader of the Legends, stealth, infiltration & field agent)
- Supergirl/Kara Zor-El/Kara Danvers (co-leader; founder/leader of her team, field agent & alien consultant)
- Green Arrow/Oliver Queen (co-leader; founder/leader of Team Arrow, archer, stealth, infiltration & field agent; former legal support as Star City mayor; turned himself over to the FBI in exchange for their help in a desperate effort to take down Ricardo Diaz)
- Team Flash
- Vibe/Cisco Ramon (tech/vision support, computer hacker & field agent)
- Killer Frost/Caitlin Snow (medic, biologist & backup tech support; former field agent)
- Joe West (CCPD detective, informant & field agent)
- Iris West-Allen (2nd-in-command, CCPN journalist, informant & mission control)
- Cecile Horton (Central City legal support & telepath)
- Team Arrow
- Overwatch/Felicity Smoak (mission control, computer hacker/operator and tech support)
- Rene Ramirez/Wild Dog (sniper, marksman, Star City street informant & field agent)
- Dinah Drake/Black Canary (interrogator & field agent)
- Curtis Holt/Mr. Terrific (tech support & field agent; occasional computer hacker)
- Supergirl's Team
- Team Flash
- Reverse-Flash/Eobard Thawne (leader & physicist; revealed to be a traitor)
- Zoom/Hunter Zolomon (physicist & field agent; revealed to be a traitor)
- Harrison "H.R." Wells (strategy support; deceased)
- Kid Flash/Wally West (engineering support and field agent; left to focus on himself; later joined the Legends)
- Harrison "Harry" Wells (physicist, biologist, tech support, occasional field agent & strategic/tactical support; left after losing most of his intelligence)
- Team Arrow
- Arsenal/Roy Harper (archer and field agent; faked his death, later returned briefly before leaving to track down and destroy the worlds Lazarus Pits with Thea and Nyssa)
- Black Canary/Laurel Lance (legal support & field agent; deceased)
- Speedy/Thea Queen (part-time member; archer and field agent, left to track down and destroy the worlds Lazarus Pits with Roy and Nyssa)
- Ragman/Rory Regan (field agent; left until he can restore his bond with the rags)
- Quentin Lance (Legal support as Mayor of Star city & occasional field agent; former police informant; died to protect his daughter's doppelganger)
- John Diggle/Spartan (2nd-in-command, marksman & field agent; left to join A.R.G.U.S.)
- Hawkman/Carter Hall (field agent; deceased)
- Hawkgirl/Kendra Saunders (field agent & occasional tech support; left to pursue a life with Scythian)
- Firestorm (field agent)
- Citizen Cold/Leo Snart (psychotherapist & field agent; returned to Earth-X)
- Vixen/Amaya Jiwe (stealth, infiltration & field agent; left to assume her destiny)
- Supergirl's Team
- Freedom Fighters
- Lyla Michaels-Diggle (director)
- Freedom Fighters (operating on Earth-X)
- Time Bureau
- Lily Stein (scientist & tech support)
- Music Meister (revealed to be an ally)
- Kuasa (enemy turned ally; field agent & co-guardian of Zambesi; due to changes to the timeline)
- Captain Boomerang/Digger Harkness (deceased)
- Weather Wizard/Mark Mardon (incarerated on Earth One)
- Benatu Eshu (deceased)
- Vandal Savage (deceased)
- Livewire/Leslie Willis (deceased on Earth Thirty-Eight)
- Silver Banshee/Siobhan Smythe (incarerated on Earth Thirty-Eight)
- Dominators (retreated)
- Cyber-woman/Laura Washington (defeated)
- Music Meister (revealed to be an ally)
- King Shark/Shay Lamden (presumed incarerated)
- Nazi (Earth-X)
- Damien Darhk (deceased)
- Mallus (deceased)
- The Alliance is similar to the team of superheroes that called themselves the Justice League.
- It's unclear if the next crossover the heroes will form the Justice League.