The Parallel Universe: 'Fifty Shades of Grey' Casting Call Crossovers - From 'Twilight' to 'The Hunger Games' [PHOTOS]

Universal Studios and Author, E.L. James is yet to release the final cast for the highly-anticipated film adaptation for "Fifty Shades of Grey".

Fans and readers are busy making their own web polls and lists of potential actors and actresses to play the lead roles. Well, to make things fun and hilarious, what about a cast cross-over from the most loved series and films? From "Twilight" to "Harry Potter", "Fifty Shades" crosses over.

E.L. James best-selling erotica novel has created hype unlike any other. Surprisingly, the BDSM-filled pages and S&M themed novel have caused addictive readers in both ordinary folk plus Hollywood celebrities.

It's no wonder why everyone is dying to know who gets cast as the lead roles namely Christian Grey and Anastasia Steele. Well, to give people something else to talk about, here's a crossover of "Fifty Shades of Grey" characters to well-loved and popular television series and films.

First off is "Twilight". Given the characters were originally based on the vampire film, it's best to say that Isabella Swan is fit as Anastasia Steele and Edward Cullen as Christian Grey. Kate Kavanagh would best be played by Alice Cullen whom "Twi"-hards know has a strong tie with Isabella Swan. Elliot Grey, the laid back adopted brother of Christian Grey, would best be portrayed by Jacob Black. Black being a werewolf would hilariously fit the "adopted" description.

Next up is "Vampire Diaries". Given Ian Somerhalder is vying for the lead role of Christian Grey then it would be best to give him that role for the cross over. Paul Wesley, the brooding brother of Ian Somerhalder, best fits the character description of Elliot Grey.

Still sticking to the vampire part of the world, what would "Fifty Shades" be like if mixed with "True Blood"? It would probably turn out to be an even darker twist with Alexander Skarsgard love for masochism. Alexander Skarsgard best fits the role of Christian Grey while Anna Paquin definitely fits the role of Anastasia Steele.

Having been a well-loved film adaptation of the post-apocalyptic world, imagine if "Hunger Games" meets "Fifty Shades of Grey". How would it all turn out? Of course, Katniss Everdeen, the girl on fire, would definitely fit the description of Anastasia Steele. Yet, with two men on the side, who is best to play Christian Grey: Peeta Mellark or Gale Hawthorn?

Taking off from the world of Panem to the magical wizard world of Hogwarts, "Harry Potter" mixed with "Fifty Shades of Grey" is definitely something mind-boggling to think about. Draco Malfoy known for his dark and devious ways as a Slytherin student would definitely fit the role as Christian Grey. Anastasia Steele on the other hand would fit the brainy role of Hermione Granger.

Hopefully, these casting cross-over might give someone from Universal Studios a definite idea on who should be playing the lead roles of Anastasia Steele and Christian Grey.