Question: Steve Marmel has worked on many animated TV series, including what series that was created by Butch Hartman for Nickelodeon?
Context: This Just In!  was an American animated series that follows the misadventures and exploits of reporter Brian Newport.  It was shown on Spike TV in 2004.  The show was co-created by comedian Steve Marmel and former Nickelodeon executive Kevin Kay, and written by Marmel and Jeff Rothpan. Bunsen Is a Beast is an American animated children's television series created by Butch Hartman for Nickelodeon.  It revolves around an eccentric beast named Bunsen, who begins attending a middle school that had previously only admitted humans.  In spite of prejudice against beasts, Bunsen befriends a human boy named Mikey Munroe and his homeschooled companion Darcy.  Together, Bunsen and his friends try to navigate through school life while outsmarting a student named Amanda, who wants to rid society of Bunsen's kind. School's Out! : The Musical is an animated musical-comedy film directed by Butch Hartman and aired on Nickelodeon on June 10, 2005, The movie is a part of the series The Fairly OddParents created by Butch Hartman. Danny Phantom is an American superhero animated series created by Butch Hartman for Nickelodeon.  It was produced by Billionfold Studios and distributed in Canada by Nelvana, a Canadian animation company.  The series follows a teenage boy who, after an accident with an unpredictable portal between the human world and the "Ghost Zone", becomes a human-ghost hybrid and takes on the task of saving his town (and the world) from subsequent ghost attacks using an evolving variety of supernatural powers.  He is aided in his quest by his two best friends, and later, his older sister, who for most of the series' run are among the only people who know of his double life. T.U.F.F. Puppy is an American children's animated television series created by Butch Hartman for Nickelodeon.  It premiered on October 2, 2010, on Nickelodeon along with "Planet Sheen".  "T.U.F.F. Puppy" is Butch Hartman's third animated series for Nickelodeon, after "The Fairly OddParents" (2001–2017) and "Danny Phantom" (2004–2007).  The series aired its final episode on April 4, 2015. The Fairly OddParents is an American animated television series created by Butch Hartman that premiered on Nickelodeon on March 30, 2001.  The series follows the everyday misadventures of Timmy Turner, a boy who is granted two fairy godparents named Cosmo and Wanda. Elmer Earl Hartman IV, better known as Butch Hartman (born January 10, 1965), is an American animator, writer, director, producer, and actor, best known for creating the Nickelodeon cartoons "The Fairly OddParents", "Danny Phantom", "T.U.F.F. Puppy" and "Bunsen Is a Beast".  Hartman also owns a production company, Billionfold, Inc., which he uses primarily to produce his shows.  Hartman has been an executive producer on "Fairly OddParents" since its series debut in 2001. Wishology is a trilogy of television specials and the ninth special of the animated television series "The Fairly OddParents".  The first part of the trilogy, "The Big Beginning", originally aired on the cable network Nickelodeon in the United States on May 1, 2009; the second part, "The Exciting Middle Part", aired on May 2; and the last of the three parts, "The Final Ending", aired on May 3.  The trilogy was written by Kevin Sullivan, Scott Fellows, and Butch Hartman, and was directed by Gary Conrad.  According to Nielsen ratings, the first and third parts of the trilogy were viewed by 4 million people, while its second part garnered 3.6 million viewers.  Critical reviewers displayed mixed reactions to how three-dimensional objects interact via computer animation with the series' usual two-dimensional artwork in the trilogy.  Composer Guy Moon, who has worked throughout the series, won an Annie Award for his music in the first part of the trilogy in 2010. Steve Marmel (born December 17, 1964) is an American television writer and producer who has worked on many animated TV series, including "The Fairly OddParents", "I Am Weasel", "Danny Phantom", "Family Guy" and "Yin Yang Yo! ".  During his work on "The Fairly OddParents" he frequently co-wrote episodes with Butch Hartman.  Marmel also created the series "Sonny with a Chance" as well as the series "Mech-X4". The Fairly OddParents is a series of live action spinoff telefilms produced through Nickelodeon, loosely based on Butch Hartman's animated series "The Fairly OddParents".  The series currently comprises three films: "" (2011), "A Fairly Odd Christmas" (2012), and "A Fairly Odd Summer" (2014).  The three films take place in a separate universe from the animated series.
Answer: Danny Phantom