Question: Charles Halford was a main cast member on an American television series featuring a DC comics character that was cenceled after only one season due to what?

full_context: Document 1: Charles Halford: Charles Halford (born February 28, 1980 in Salt Lake City, Utah) is an American actor. In 2009, he starred in the DCOM "Dadnapped" as Skunk. He has also co-starred in dozens of other television shows and films such as "The Luck of the Irish". Halford was a main cast member on the NBC series "Constantine", portraying Francis "Chas" Chandler.
Document 2: Charles Parnell (actor): Charles Parnell is an American actor best known for being the second actor to portray Police Chief Derek Frye on "All My Children". Parnell took over the role previously played by actor William Christian. He joined the cast of the show on September 8, 2005, and made his final appearance on September 24, 2007. Parnell also provides the voice of Jefferson Twilight on Cartoon Network's "The Venture Bros." He is currently playing the role of Master Chief Russ Jeter on the TNT show "The Last Ship", which has been renewed for season 4.
Document 3: Constantine (TV series): Constantine is an American television series developed by Daniel Cerone and David S. Goyer for NBC, featuring the DC Comics character John Constantine. Matt Ryan stars as Constantine, a British exorcist and occult detective who actively hunts supernatural entities. The series aired from October 24, 2014 to February 13, 2015, over 13 episodes. On May 8, 2015, NBC canceled "Constantine" after only one season due to poor ratings. Ryan reprised the role in a guest appearance in the fourth season of The CW series "Arrow", set within the Arrowverse, and it was announced in January 2017 that he would voice the character in an animated web series on The CW Seed later that year.
Document 4: The Constant: "The Constant" is the fifth episode of the fourth season of the American Broadcasting Company's (ABC) serial drama television series "Lost", and the 77th episode overall. It was broadcast on February 28, 2008, on ABC in the United States and on CTV in Canada. It was written by executive producer Carlton Cuse and co-creator/executive producer Damon Lindelof and directed by executive producer Jack Bender. "The Constant" was watched by 15 million American viewers and is widely regarded as one of "Lost"<nowiki>'</nowiki>s best episodes. It was nominated for three Primetime Emmy Awards, a Directors Guild of America Award, and a Hugo Award.
Document 5: Charlie Hunnam: Charles Matthew Hunnam (born 10 April 1980) is an English actor. He is known for his roles as Jackson "Jax" Teller in the FX drama series "Sons of Anarchy" (2008–14), Nathan Maloney in the Channel 4 drama "Queer as Folk" (1999–2000), Lloyd Haythe in the Fox comedy series "Undeclared" (2001–02), the title role in "Nicholas Nickleby" (2002), Pete Dunham in "Green Street" (2005), Raleigh Becket in "Pacific Rim" (2013), Percy Fawcett in "The Lost City of Z" (2017), and in the title role of Guy Ritchie's "" (2017).
Document 6: Charlie Haas: Charles Doyle "Charlie" Haas II (born March 27, 1972) is an American semi-retired professional and amateur wrestler. He is best known for his appearances with World Wrestling Entertainment (WWE) in the 2000s and Ring of Honor (ROH) in the 2010s.
Document 7: Chas Early: Chas Early is a British actor and playwright. He has appeared on TV shows such as Casualty and EastEnders, "Skins" and Mayo. He is probably best known for portraying the late comedian Bill Hicks in his one-man show, "Bill Hicks: Slight Return".
Document 8: Chas Chandler (comics): Frank William "Chas" Chandler is a fictional character in the "Hellblazer" series published by DC Comics and its Vertigo imprint. Chas is John Constantine's closest and longest surviving friend, who acts as his sidekick and cab driver. He first appeared in "Hellblazer #1".
Document 9: Hellblazer: Hellblazer (also known as John Constantine, Hellblazer) is an American contemporary horror comic book series, originally published by DC Comics, and subsequently by the Vertigo imprint since March 1993 when the imprint was introduced. Its central character is the streetwise magician John Constantine, who was created by Alan Moore and Stephen R. Bissette, and first appeared as a supporting character in "The Saga of the Swamp Thing" #37 (June 1985), during that creative team's run on that title. "Hellblazer" had been published continuously since January 1988, and was Vertigo's longest running title, the only remaining publication from the imprint's launch. In 2013, the series concluded with issue 300, and has been replaced by a DC Universe title, "Constantine". It was then relaunched in 2016 with the title "The Hellblazer" as part of "DC Universe Rebirth", restoring the character to his original cast, tone and setting. Well known for its political and social commentary, the series has spawned a film adaptation, television show, novels, and multiple spin-offs and crossovers.
Document 10: John Constantine: John Constantine ( ) is a fictional antihero, appearing in comic books published by DC Comics and its alternative imprint Vertigo. The character first appeared in "Swamp Thing" Vol. 2 No. 25 (June 1984), and was created by Alan Moore, Steve Bissette and John Totleben. He serves as the lead character of the comic books "Hellblazer" (1988–2013), "Constantine" (2013–15), "Constantine: The Hellblazer" (2015–16), and "The Hellblazer" (2016–).
Document 11: Matt Ryan (actor): Matt Ryan (born Matthew Darren Evans; 11 April 1981) is a Welsh actor from Swansea, best known as Edward Kenway in the Ubisoft video game "" and John Constantine in the NBC series "Constantine" and The CW series "Arrow", as well as voicing the character in the 2017 film "Justice League Dark".
Document 12: Charlie Harper (Two and a Half Men): Charles Francis "Charlie" Harper is a fictional character in the CBS sitcom "Two and a Half Men" during the first eight seasons of the series. Played by actor Charlie Sheen, the character has garnered him four Primetime Emmy Award nominations for Outstanding Lead Actor in a Comedy Series and two Golden Globe nominations for Best Performance by an Actor in a Comedy Series. Although the character was written off after the end of the eighth season, the character was reprised for one episode of the ninth season by Kathy Bates, which resulted in her winning the Primetime Emmy Award for Outstanding Guest Actress in a Comedy Series and in the series finale, "Of Course He's Dead".
Document 13: Charles Band: Charles Robert Band (born December 27, 1951) is an American film producer and director, known for his work on horror comedy movies.
Document 14: Constantine (film): Constantine is a 2005 American occult detective film directed by Francis Lawrence (in his directorial debut) and starring Keanu Reeves as John Constantine. Rachel Weisz, Shia LaBeouf, Tilda Swinton, Pruitt Taylor Vince, and Djimon Hounsou co-star. With a screenplay by Kevin Brodbin and Frank Cappello, the film is based on DC Comics' "Hellblazer" comic book, with plot elements taken from the "Dangerous Habits" story arc (issues #4146) and the "Original Sins" story arc. The film portrays John Constantine as a cynic with the ability to perceive and communicate with half-angels and half-demons in their true form. He seeks salvation from eternal damnation in Hell for a suicide attempt in his youth. Constantine exorcises demons back to Hell to earn favor with Heaven but has become weary over time. With terminal lung cancer, he helps a troubled police detective learn the truth about her sister's death while simultaneously unraveling a much larger and darker plot.
Document 15: Constantine (comic book): Constantine is an ongoing comic book series published by DC Comics, which started in March 2013. It features British exorcist John Constantine re-established into the DC Universe, and replaces the former Vertigo Comics title "Hellblazer", which ended with its 300th issue after 25 years, in February 2013. The title character was originally created by Alan Moore in his 1980s run on "Swamp Thing".
ground_truth: poor ratings