50 Fun Facts About Arrowverse

Which 1970s TV star plays US President Olivia Marsdin on The CW's Supergirl?

Lynda Carter, TV's Wonder Woman of the 1970s, plays a president who signs an amnesty for aliens living in secret and is then revealed to be one herself, a Durlan in human form.

Which US network launched Supergirl and aired it for one season before a move to The CW?

CBS aired the first season of Supergirl, which led producer Marc Guggenheim to nickname her universe 'Earth-CBS'.

Which Star Wars actor plays the Trickster on The CW's The Flash, as he did on the 1990 version of The Flash?

Mark Hamill came back to the Trickster more than two decades after the 1990 show, and has also voiced him in DC's animated Justice League series.

Which Prison Break star plays the villain Leonard Snart, better known as Captain Cold, on The CW's The Flash?

Wentworth Miller was reunited with his Prison Break brother Dominic Purcell, who plays Captain Cold's partner in crime, Heat Wave.

On The CW's The Flash, what S.T.A.R. Labs machine explodes on the night Barry Allen is struck by lightning?

The particle accelerator blast also creates the metahuman villains of Central City, and Barry himself wakes from a nine-month coma with super speed.

Which Superman actor plays Ray Palmer, the hero known as the Atom, on Arrow and Legends of Tomorrow?

Brandon Routh, star of the film Superman Returns, wore the cape again in the crossover Crisis on Infinite Earths, playing both Superman and the Atom in the same story.

On Arrow, fishermen rescue Oliver Queen from which remote island, where he was shipwrecked five years earlier?

Lian Yu lies in the North China Sea, and Oliver Queen washed up there after his family's yacht, the Queen's Gambit, went down.

Which Smallville star returned as Clark Kent, now living on the family farm, in Crisis on Infinite Earths?

Tom Welling's Clark has given up his powers for a quiet family life, a twist the writers meant as a nod to the film Superman II.

Which Canadian city, standing in for Starling City and Central City, is the main filming base for the Arrowverse shows?

Vancouver hosted Arrow from its 2012 pilot onwards, and Supergirl relocated there from Los Angeles for its second season to cut costs.

Which Batman villain, leader of the League of Assassins, is Oliver Queen's main enemy in the third season of Arrow?

Ra's al Ghul is treated on Arrow as a title passed between leaders of the League, and Malcolm Merlyn later seizes it for himself.

Which Toronto-born actor plays billionaire vigilante Oliver Queen for all eight seasons of Arrow?

Stephen Amell has also stepped into real wrestling rings, and his first project after Arrow was the wrestling drama Heels.

Which former Glee actor, who played Sebastian Smythe, stars as Barry Allen on The CW's The Flash?

Grant Gustin made his debut as Barry Allen in the second season of Arrow, where a planned backdoor pilot was dropped in favour of a standalone one.

Which actress, seen in Glee and the film Whiplash, plays Kara Danvers on Supergirl?

Melissa Benoist met her future husband Chris Wood when he joined the cast as Mon-El in the second season.

Which Queen Consolidated IT expert becomes Team Arrow's hacker, code-named Overwatch, and later marries Oliver Queen?

Felicity Smoak was written as a one-episode guest part, but Emily Bett Rickards went down so well that she became a series regular from season two.

On The CW's The Flash, which time-travelling speedster from the future murders Barry Allen's mother, Nora?

Eobard Thawne then frames Barry's father for the killing, yet the murder leaves him stranded in the past without his own speed.

On The CW's The Flash, which Central City Picture News journalist becomes Barry Allen's wife?

Iris West says yes when Barry serenades her and proposes again in the musical episode 'Duet', and she later founds her own newspaper, The Central City Citizen.

On Supergirl, where does Kara Danvers live and work while her cousin Superman protects Metropolis?

National City also lures Jimmy Olsen away from the Daily Planet to become art director at CatCo Worldwide Media.

Which Doctor Who and Torchwood actor plays the villainous archer Malcolm Merlyn on Arrow?

John Barrowman's Malcolm Merlyn turns out to be the real father of Oliver Queen's sister Thea.

Which Two and a Half Men star plays the scheming Lex Luthor on Supergirl?

Jon Cryer already had Luthor history, having played Lex's nephew Lenny in the 1987 film Superman IV: The Quest for Peace.

Which Titanic and Alias actor plays Professor Martin Stein on The CW's The Flash and Legends of Tomorrow?

Victor Garber's professor sacrifices himself in the crossover Crisis on Earth-X, though the actor returned as a memory for the Legends' 100th episode.

On Legends of Tomorrow, what is the name of the stolen timeship the team uses to travel through history?

The Waverider is run by an artificial intelligence called Gideon, who is eventually given a human form in the final season.

Which rogue Time Master travels back from 2166 to assemble the team in the pilot of Legends of Tomorrow?

Rip Hunter takes the timeship against the Time Council's wishes, driven by revenge on the tyrant who murdered his wife and son.

Which hero is formed on Legends of Tomorrow when Professor Martin Stein merges with mechanic Jefferson Jackson?

Firestorm needs two people to exist, and Jax only became the professor's other half after an injury ended his hopes of a pro sports career.

On Legends of Tomorrow, which talking children's toy do the Vikings come to worship as their god of war?

Beebo arrives in Viking times with a young Martin Stein, who had been buying the toy for his daughter when he was pulled out of his own era.

Which Welsh actor plays occult detective John Constantine on Legends of Tomorrow, a role he began on NBC?

Matt Ryan first brought Constantine into the Arrowverse for a one-off Arrow episode, wearing his original trench coat fetched out of storage.

Which mercenary, Oliver Queen's mentor on the island, returns to terrorise Starling City in Arrow's second season?

Slade Wilson, better known as Deathstroke, lost his eye to Oliver himself, who put an arrow through it when their friendship collapsed.

On Arrow, which experimental serum gives Roy Harper super strength while slowly costing him his sanity?

Mirakuru is finally beaten with a cure, which Oliver uses to defeat an entire army of serum-enhanced soldiers.

Which military veteran is hired as Oliver Queen's bodyguard on Arrow and becomes his closest crime-fighting ally?

John Diggle was created for the show and named after comics writer Andy Diggle, and he later takes the codename Spartan.

On The CW's The Flash, which mechanical engineering genius at S.T.A.R. Labs becomes the hero Vibe?

Cisco Ramon is the youngest member of the lab's team, and his 'vibe' power lets him sense where a person is and cross the multiverse.

On The CW's The Flash, what is Barry Allen's day job with the Central City Police Department?

The forensic chemist job follows a childhood tragedy: Barry saw his mother murdered and his father wrongly jailed for the crime.

Which Ally McBeal star plays Kara Danvers's boss, the media magnate who founded CatCo, on Supergirl?

Calista Flockhart dropped to a recurring role once filming left Los Angeles, because her contract required her to work there.

On Supergirl, DEO director Hank Henshaw is secretly which Green Martian hero in disguise?

J'onn J'onzz, the Martian Manhunter, took on Henshaw's face after the real man died hunting him in Peru, then set about reforming the DEO from within.

Which actress played Kate Kane in the first season of Batwoman before leaving the role?

Ruby Rose's Kate Kane was billed as television's first openly lesbian lead superhero, and after she left the part went to Wallis Day.

On Batwoman, what name does Kate Kane's presumed-dead twin sister Beth use as leader of the Wonderland Gang?

Alice sets out to erode Gotham's sense of security, while her own father runs the Crows, the private security firm trying to protect it.

On Black Lightning, what job does retired superhero Jefferson Pierce hold at Garfield High School in Freeland?

Principal Pierce had hung up his suit nine years earlier for his family's sake, and only returns to it when a gang kidnaps his daughters.

Which longtime voice of the animated Batman played Bruce Wayne in live action in Crisis on Infinite Earths?

Kevin Conroy had voiced the hero for decades, starting with Batman: The Animated Series, yet this was his only live-action turn in the role.

In which Arrowverse crossover do Oliver Queen and Barry Allen wake up living each other's lives?

Elseworlds also brought Kate Kane and Gotham into the franchise, after an Arkham Asylum psychiatrist was handed a book that could rewrite reality.

Which alien race do Arrow, The Flash, Supergirl and Legends of Tomorrow unite against in the crossover 'Invasion!'?

The Dominators, the heroes learn, had already landed on Earth once in the 1950s before mysteriously departing.

Before Crisis on Infinite Earths merged the worlds, which numbered universe was home to Kara Danvers on Supergirl?

Earth-38 was confirmed as a separate universe in the 2016 crossover episode 'Worlds Finest', when Barry Allen first ran into Kara's world.

Which cosmic villain, played by LaMonica Garrett, destroys whole universes in the crossover Crisis on Infinite Earths?

The Anti-Monitor wipes out worlds with a wave of antimatter, and Garrett also plays his heroic opposite number, the Monitor.

Which former TV superhero plays Barry Allen's father, Henry, on The CW's The Flash?

John Wesley Shipp was the Flash in the 1990 TV series, later suited up as that hero again, and also played Jay Garrick, the Flash of another Earth.

On The CW's The Flash, which speedster from a parallel world murders Barry Allen's father in season two?

Zoom is obsessed with being the only speedster in the multiverse, and is voiced from behind the mask by Tony Todd.

On The CW's The Flash, which god-like speedster turns out to be a time remnant of Barry Allen himself?

Savitar is a copy of Barry who was shunned by his friends, sank into despair and ran back in time to become the villain.

Which crime-ridden district of Starling City does Malcolm Merlyn plot to level with a machine in Arrow's first season?

The Glades scheme, known as the Undertaking, was meant to kill thousands so that the district could be rebuilt from scratch.

On Arrow, fifth-season flashbacks show Oliver Queen joining which crime syndicate to get close to Konstantin Kovar?

The Bratva storyline casts action star Dolph Lundgren as Kovar, the man Oliver is plotting to assassinate.

Which reality-rewriting artifact do the Legends of Tomorrow race the Legion of Doom to find in season two?

The Spear of Destiny does fall into the villains' hands for a while, producing a rewritten reality that the show calls Doomworld.

On Black Lightning, which former politician turned crime boss is Jefferson Pierce's archenemy in Freeland?

Tobias Whale stays unnaturally young thanks to a serum that halts his ageing, and is played by Marvin 'Krondon' Jones III.

On Arrow, which Star City district attorney is unmasked as the fifth season's serial killer, Prometheus?

Adrian Chase wants revenge because Oliver, in his early days as a vigilante, killed his father, a corrupt drug manufacturer.

On Supergirl, Kara's friend Samantha Arias unknowingly transforms into which world-killing Kryptonian weapon?

Reign's host was sent to Earth from Krypton as an infant, and she has no idea what her alter ego is doing.

On Supergirl, which Kryptonian prison held the alien criminals who escape to Earth in season one?

Fort Rozz held the criminals that Kara's own mother, Alura, had imprisoned, so the fugitives on Earth are her mother's old cases.