History Trivia / Arrow

** Creator/StephenAmell (Oliver Queen himself), Creator/EmilyBettRickards (Felicity Smoak), Jacqueline [=MacInnes=] Wood ([[ThePeteBest the original Sara Lance]]), Roger Cross (Lucas Hilton), Michael Rowe (Floyd Lawton), Creator/AdrianHolmes (Frank Pike), Creator/ChristieLaing (Carly Diggle), Creator/ChelahHorsdal (Kate Spencer), Creator/CurrieGraham (Derek Reston), Kyle Schmid (Kyle Reston), Creator/TahmohPenikett (Nick Salvati), Creator/TerylRothery (Jean Loring), Creator/DylanBruce (Adam Donner), Creator/NicholasLea (Mark Francis), Michael Eklund (Barton Mathis), Nolan Funk (Cooper Seldon), Creator/AnnaHopkins (Samantha Clayton), Creator/ChristinaCox (Celia Castle), Creator/AlexanderCalvert (Lonnie Machin), Creator/VenusTerzo (Elisa Schwartz), Janet Kidder (Ruvé Adams), Carly Pope (Susan Williams), Joe Dinicol (Rory Regan), Creator/KaceyRohl (Alena Whitlock) and Creator/BenLewis (adult William Clayton) are all Canadians.

* AscendedFanon: CanonForeigner John Diggle proved to be a fan favorite from the beginning. However, some fans speculated thanks to the overall look and the military background that Diggle [[CanonCharacterAllAlong might actually be John Stewart]], better known as one of Earth's [[ComicBook/GreenLantern Green Lanterns]] in the comic books. The showrunners generally loved that idea and despite not being able to use Green Lantern directly throw in hints towards thar theory, like John having a step-father with the last name Stewart or the Earth-90 Flash recognizing John and the lack of a "ring"... The series finale goes straight for it, seeing John finding a package from space with a green light in it, outright confirming John would go on to become the Franchise/{{Arrowverse}}'s version of Green Lantern.

* IKnewIt:
** Sebastian Blood is Brother Blood.
** Sara Lance survived [[NeverFoundTheBody the sinking of the Queen's Gambit]]. Her being Black Canary was also a popular crack-theory not even five episodes into Season 1.
** A number of people suggested that due to her brown hair not being a trait inherited from two blonde parents, Thea wasn't Robert and Moira Queen's daughter. It was revealed in "State v. Queen" that Thea was conceived after an affair between Moira and Malcolm Merlyn.
** Malcolm is BackFromTheDead. Okay, technically he never died in the first place, but the point stands.
** As soon as Sara asked Oliver "What happened to Slade?" without mentioning Shado, people correctly assumed she was killed.
** Slade's return. Given the character's popularity, [[LikeYouWouldReallyDoIt most fans knew he wouldn't be killed like he was]]. Also, since the character is known for being a ''villain'', as soon as they mentioned what Ivo was looking for and what Brother Blood was doing, many worked out he would be used on Slade and that he was the BigBad well ahead of the reveal.
** Malcolm Merlyn being involved in Sara's death in Season 3; not as obvious and many had their doubts, but some still expected TheReveal just the same.
** Akio, Maseo and Tatu's son, dies.
** When Marc Guggenheim revealed a second wedding in Season 3, a lot of people accurately predicted that it would be between Oliver and Nyssa.
** Thea Dearden Queen being the show's version of Mia Dearden was accurately predicted by majority of the fans as early as the pilot.
** Pretty much everyone figured out that Nyssa will be the one who will complete Laurel's training to be Black Canary the moment Sara [[DeathIsCheap dies]] in the Season 3 premiere.
** A lot a people figured out that the Calculator was Felicity's father.
** The Promo of ''Who are you'' confirms that ''Laurel'' returning from the dead is really just Black Siren.
** Many fans were right that Slade would return in the season five finale.
** Most fans called it that Ricardo Diaz was the ''real'' BigBad of Season 6 and the one who killed Owen Post's son. Turns out the [[NeverTrustATrailer trailers didn't lie after all]].
** Many fans were right that Thea will leave during or after Season 6. She did during the middle of the season.
** Many fans called Quentin dying in the Season 6 finale, and that it will complete Black Siren's HeelFaceTurn.
** Diaz surviving Season 6 is a popular fan theory.
** Black Siren becoming the Black Canary is one of the most popular theories regarding the character.
** Mia/Blackstar being Oliver and Felicity's daughter was something people figured out as soon as she appeared.

** Creator/CaityLotz was understandably not pleased with her character's treatment in Season 3, being killed off in the premiere and then strung along for more appearances anyway. She did two (as a fake voice, and a hallucination). However, she was pleased to be resurrected in the fourth season of ''Arrow'' and move on to ''Series/LegendsOfTomorrow''.

** Eugene Lipinski (Alexei) is from England, playing a Russian character.

* SeparateAtBirthCasting: Katherine Mcnamara bears strong resemblance in to the actors playing her parents with similar looks to Emily Bett Rickards and similar mannerisms to Stephen Amell.