Total Nerd 30 Facts & Trivia You Didn't Know About Arrow  

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List Rules Upvote the most surprising trivia, tidbits, and Easter eggs from CW's Arrow series.

Comic books, superheroes, and their story lines are more prominent in the media than ever before, first taking the silver screen by storm and now, TV. With the running successes of Marvel's Agents of S.H.I.E.L.D. and recently The Flash, we decided to take a look at one of the highest rated comic book shows on TV, Arrow. You might think you know it all about this awesome CW comic series, but there are still some behind the scenes facts and trivia here that might surprise you.

Arrow is in its third season, having premiered in 2012, and follows Oliver Queen's exploits as the Green Arrow. We wanted to go through the little known facts, the stuff you may not know about this beloved series. Sure, we all know that Stephen Amell took up the Arrow mantle after Justin Hartley played the character on Smallville, but did you know that the actors who play Arrow and Firestorm are cousins
 
Check out these facts and Arrow Easter eggs that you may have never known, and be sure to vote up the ones you think are the most shocking.
1

This castle is everywhere.


This castle is everywhere. is listed (or ranked) 1 on the list 30 Facts & Trivia You Didn't Know About Arrow
Photo: via Twitter
The Queens mansion exterior shots are filmed at the same castle they used to use as Luthor's castle on Smallville and also the Xavier School of Gifted Youngsters in X2: X-Men United and X-Men: The Last Stand

John Diggle is listed (or ranked) 2 on the list 30 Facts & Trivia You Didn't Know About Arrow
Photo: via Reddit
Like Chloe Sullivan on Smallville, John Diggle was an original character created for the show that quickly became a fan favorite. Also like Ms. Sullivan, he was quickly adapted into the comic universe in DC's New 52.

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see more on John Diggle breaks through.
3

Mr. J!


Mr. J! is listed (or ranked) 3 on the list 30 Facts & Trivia You Didn't Know About Arrow
Photo: via Wikimedia
In the episode "Suicide Squad," a woman with a very distinct voice offers to help the group stop fighting because she is a therapist. This is none other than Harley Quinn who was a prison therapist when she met her future beau, The Joker. The character was played by actress Cassidy Alexa, but actress Tara Strong provided voice over work. Tara is known for voicing Harley Quinn in the Batman video games Batman: Arkham City, and Batman: Arkham Knight
4

Super introduction.


Super introduction. is listed (or ranked) 4 on the list 30 Facts & Trivia You Didn't Know About Arrow
Photo: via Pinterest
Arrow introduced Barry Allen during season two - a launch pad for his own superhero show, CW's The Flash. The beginnings of a shared DC hero TV universe.