Question: Who created the series "Sonny with a Chance" and the Disney Channel series starring Nathaniel Potvin?

Context paragraphs:
So Random!: So Random!  is an American Disney Channel sketch comedy series that premiered on June 5, 2011.  It was announced as an independent series after Demi Lovato left the parent series, "Sonny with a Chance".  The series features the actors who acted in "Sonny with a Chance", besides Lovato: Tiffany Thornton, Sterling Knight, Brandon Mychal Smith, Doug Brochu, and Allisyn Ashley Arm along with other featured actors who recur in the series.  The series premiere was watched by 4.1 million viewers.

Famous 5: On the Case: Famous 5: On The Case is a British/French animated television series which is currently broadcast in the United Kingdom, on the Disney Channel, and in the United States, on Qubo.  It is a British and French television co-production, loosely based on "The Famous Five" series of books created by Enid Blyton.  At least some of the episodes have been developed for television by Douglas Tuber and Tim Maile, the writers of the former Disney Channel series "Lizzie McGuire".  On 21 June 2008 the show debuted in Italy and Australia on Disney Channel.

Piper Curda: Piper Joy Curda (born August 16, 1997) is an American actress and singer.  She is known for her roles as Jasmine in the Disney Channel series "I Didn't Do It", and as Alyssa in the Disney Channel Original Movie "Teen Beach 2".  Previously Curda appeared in a recurring role in the third season of the Disney Channel series "A.N.T. Farm".

Jett Jackson: The Movie: Jett Jackson: The Movie is a 2001 American Disney Channel Original Movie based on the Disney Channel series "The Famous Jett Jackson".  It is the first Disney Channel Original Movie to be based on a Disney Channel Original Series.

List of Mech-X4 episodes: "Mech-X4" (often stylized as "MECH-X4") is an American action television series created by Steve Marmel that premiered on Disney Channel on November 11, 2016, and moved to Disney XD on April 17, 2017.  The series stars Nathaniel Potvin, Raymond Cham, Kamran Lucas, Pearce Joza, and Alyssa Jirrels.

G Hannelius: Genevieve Knight "G" Hannelius (born December 22, 1998) is an American actress and singer.  She starred as Avery Jennings in the Disney Channel sitcom "Dog with a Blog".  Prior to this, she had recurring roles in the Disney Channel series "Sonny with a Chance" and "Good Luck Charlie".  She has also starred in "Leo Little's Big Show" and has done voice work as Rosebud in the "Air Buddies" films.  She also guest starred in Disney Channel's series "Jessie".

Mech-X4: Mech-X4 (often stylized as "MECH-X4") is an American action television series created by Steve Marmel that premiered on Disney Channel on November 11, 2016, and moved to Disney XD on April 17, 2017.  The series stars Nathaniel Potvin, Raymond Cham, Kamran Lucas, Pearce Joza, and Alyssa Jirrels.

Discover Magazine (TV series): Discover Magazine is a 1992-2000 documentary television series that aired on the Disney Channel from 1992-1994 and then on Discovery Channel from 1996-2000.  The series is named after the magazine of the same name, "Discover Magazine".  The Disney Channel series was narrated by actor Joseph Campanella.  Discovery Channel series was hosted by Peter DeMeo from 1996-1998.  The series was nominated for an Emmy Award for "Outstanding Informational Series" in 1996, 1997 for "Outstanding Non-Fiction Series", and 1 other time

Hannah Montana (season 4): The fourth and final season of the television series "Hannah Montana" (marketed as Hannah Montana Forever) began airing on Disney Channel on July 11, 2010.  Disney Channel renewed the series for a fourth season on June 1, 2009 along with "Sonny With a Chance", and production of the season began on January 18, 2010, and ended on May 14, 2010.  In this season, Mitchel Musso's character Oliver Oken becomes a recurring character, and is no longer in the main cast, due to Musso starring on the Disney XD series "Pair of Kings".  In the season, the Stewarts and Lilly move to a ranch in Malibu.  This is the only season of the show to be broadcast in High Definition.  The season ended on January 16, 2011 (USA) and May 27, 2011 (UK & Ireland).

Steve Marmel: 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".

Supporting paragraphs: Steve Marmel Mech-X4
Answer: Steve Marmel