Question: Joseph Morgan is best known for his roll in what CW show that eventually spun off into "The Originals"?

Context articles: AOL
David Ramsey
Michael Raynor (actor)
The Vampire Diaries (season 2)
Joseph Morgan (actor)
The Vampire Diaries (season 3)
Nathaniel Buzolic
List of The Originals characters
Original Vampires (The Vampire Diaries)
Chyler Leigh

AOL (formerly a company known as AOL Inc., originally known as America Online, and stylized as Aol) is a web portal and online service provider based in New York.
 It is a brand marketed by Oath, a subsidiary of Verizon Communications.
 AOL was one of the early pioneers of the Internet in the mid-1990s, and the most recognized brand on the web in the U.S.
 It originally provided a dial-up service to millions of Americans, as well as providing a web portal, e-mail, instant messaging and later a web browser following its purchase of Netscape.
 At the height of its popularity, it purchased the media conglomerate Time Warner in the largest merger in U.S. history.
 AOL rapidly declined thereafter, partly due to the decline of dial-up to broadband.
 AOL was eventually spun off from Time Warner in 2009, with Tim Armstrong appointed the new CEO.
 Under his leadership, the company invested in media brands and advertising technologies.
David Ramsey (born November 17, 1971) is an American actor, best known for his roles in the Showtime TV series "Dexter" as Anton Briggs, the film "Mother and Child" (2009) as Joseph, and the CW show "Arrow" as John Diggle.
Michael Raynor, is an American actor, director and writer.
 His best known roles are as Joseph Morgan in "ER (TV series)", Apollo 15 Astronaut Al Worden in "From the Earth to the Moon", Mick in the movie "A Brother's Kiss" and Frank in the movie "Federal Hill."
The Vampire Diaries, a 40 minute American supernatural drama, was officially renewed by The CW for a full 22-episode season on February 16, 2010.
 The first episode premiered on September 9, 2010, at 8 p.m. ET.
 The season picks up immediately after the events of the season one finale.
 All the series regulars returned.
 Season two focuses on the return of Elena Gilbert's (Nina Dobrev) doppelgänger, Katherine Pierce, the introduction of werewolves, the sun and moon curse, and the arrival of the original vampires.
 Tyler Lockwood's (Michael Trevino) uncle, Mason Lockwood (Taylor Kinney), arrives in town searching for the moonstone, a family heirloom.
 Tyler later learns of his family's werewolf curse.
 Meanwhile, Caroline Forbes (Candice Accola) is killed by Katherine while having Damon Salvatore's (Ian Somerhalder) blood in her system, turning her into a vampire.
 The arrival of the original vampires, Elijah (Daniel Gillies) and Klaus Mikaelson (Joseph Morgan), also bring about complications.
 Klaus is a vampire-werewolf hybrid, but his werewolf side had been forced into dormancy by witches, as nature would not stand for such an imbalance in power.
 Therefore, Klaus arrives in town with plans to break the curse and unleash his werewolf side by channelling the power of the full moon into the moonstone, sacrificing a vampire and a werewolf, and drinking the blood of the doppelgänger.
 The season is currently on air in Urdu on filmax channel in Pakistan.
 It became available on DVD and Blu-ray on August 30, 2011.
Joseph Morgan (born Joseph Martin; 16 May 1981) is an English actor and director.
 He is best known for his role as Klaus Mikaelson in The CW show "The Vampire Diaries" and its spin-off "The Originals".
"The Vampire Diaries", a one-hour American supernatural drama, was officially renewed for a third season by The CW on April 26, 2011, that aired from September 15, 2011, to May 10, 2012.
 The third season consisted of 22 episodes and focused on the story of Klaus' origin, his relation with his family and reveal more about the original family.
 The third season opened to generally positive reviews.
 The season takes a gap from the last season and begins with Elena Gilbert's 18th birthday with all series regulars returning with the exception of Sara Canning whose character Jenna Sommers was killed off in the previous season.
 Joseph Morgan's character Klaus became a series regular instead of returning as a recurring character.
Nathaniel Buzolic (born 4 August 1983) is an Australian actor.
 He was the host of Nine Network's late-night television quiz show "The Mint", and had a regular role on the BBC soap opera "Out of the Blue" (2008).
 He was also a co-host of the educational show "Weather Ed" on The Weather Channel.
 He is also known for his role as Kol Mikaelson on the CW show "The Vampire Diaries" and its spin-off "The Originals".
"The Originals" is an American fantasy-drama television series picked up by The CW for their fall 2013 schedule, after a backdoor pilot for the series aired as an episode of The CW television series "The Vampire Diaries" in April 2013.
 It is a spin-off of "The Vampire Diaries", sharing a universe with its predecessor.
 It centers on three Mikaelson siblings, Klaus (Joseph Morgan), Elijah (Daniel Gillies), and Rebekah (Claire Holt), collectively known as "original vampires", or simply the "originals".
 "The Originals" is set in the city of New Orleans.
 It was created by Julie Plec.
The Original vampires, in the universe of "The Vampire Diaries" and "The Originals", are a family of vampires from which all current vampires descend, as well as being the most powerful and indestructible of their kind.
 In Autumn 1001 AD, after the death of her youngest son Henrik at the hands of werewolves, the powerful witch Esther performed an occult blood ritual in order to protect her five remaining children—(Finn, Elijah, Niklaus, Kol, and Rebekah)—and her husband, Mikael.
 The ritual transformed her family into the first vampires.
Chyler Leigh West (pronounced ; "née" Potts; born April 10, 1982), known professionally as Chyler Leigh, is an American actress, singer and model, best known for her portrayals of Janey Briggs in "Not Another Teen Movie" and Dr. Alexandra "Lexie" Grey in the ABC medical drama "Grey's Anatomy".
 In October 2015, she began starring, in a lead role, in the CBS/CW show "Supergirl" as Alexandra "Alex" Danvers.