Question: Which company did the self-traught illustrator of a children's book series, based on twelve-year-old orphaned twins who cause mischief and mayhem in their sickly sweet town, Nod's Limb, co-found?

Context articles: The Amazing World of Gumball (season 2)
Jamie Suzanne
The Amazing World of Gumball (season 5)
Rick Carton
The Amazing World of Gumball (season 3)
Yo-kai Watch (video game)
Edgar &amp; Ellen
Sweet Valley University
The Amazing World of Gumball (season 4)
The Amazing World of Gumball (season 6)

The second season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, originally aired on Cartoon Network in the United States.
 The season debuted on August 7, 2012 and ended on December 3, 2013.
 This season consists of 40 episodes.
 The season focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish.
 Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High.
Jamie Suzanne (pseudonym) wrote every book in the "Sweet Valley Kids" series and the "Sweet Valley Twins and Friends" series.
 Jamie Suzanne is the pen name used by multiple ghost-writers of the "Sweet Valley Kids" and "Sweet Valley Twins" book series.
 The pseudonym is a combination of the names of Francine Pascal’s daughters.
The fifth season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, aired on Cartoon Network in the United States on September 1, 2016.
 The series focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish.
 Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High, where they attend middle school.
Rick Carton is a self-taught illustrator of the "Edgar & Ellen" book series, and co-founder of Star Farm Productions, a children's entertainment company.
 Currently, he lives in Chicago, Illinois, USA.
The third season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, aired on Cartoon Network in the United States.
 The season has 40 episodes.
 The series focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish.
 Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High, where they attend middle school.
Yo-kai Watch (Japanese: 妖怪ウォッチ , Hepburn: Yōkai Wotchi ) is a role-playing video game developed by Level-5 for the Nintendo 3DS and the first game in the "Yo-kai Watch" franchise.
 Originally released in Japan on July 11, 2013, the game is based around the Yōkai of Japanese folklore, who are said to be ghosts and apparitions that cause mischief in daily life.
 In "Yo-kai Watch", player character Nathan "Nate" Adams or Katie Forester, depending on who the player chooses, is given the titular watch, which gives him or her the ability to see Yo-kai, after stumbling across and befriending a butler Yo-kai named Whisper.
 Players assume the role of Nate or Katie, as he or she travels around town searching for and befriending peaceful Yo-kai, battling hostile Yo-kai, and solving problems caused by mischievous Yo-kai.
Edgar & Ellen, created by Simon & Schuster Children's Publishing, is based on twelve-year-old orphaned twins who cause mischief and mayhem in their sickly sweet town, Nod's Limbs.
 The series currently contains nine books in addition to some side material.
 The Twin's name's are derived from American author and poet Edgar Allan Poe. "
Rare Beasts" is the first, followed by "Tourist Trap", "Under Town", "Pet's Revenge", "High Wire" and "Nod's Limbs", with a sequel series premiering just a year later, currently consisting of "Hot Air", "Frost Bites" and "Split Ends".
 The "Mischief Manual", a book written in the voice of the twins themselves, hit the shelves in June 2007.
 A weekly TV series premiered October 7, 2007 on Nicktoons.
Sweet Valley University, also known as SVU, is part of the "Sweet Valley High" young adult book series created by Francine Pascal.
 The series followed on from the "Sweet Valley Senior Year" series and featured twins Jessica and Elizabeth Wakefield starting college.
 Unlike any of the other spin-offs, "SVU" covered two years of the twins' lives, their freshman and sophomore years in college.
The fourth season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, aired on Cartoon Network in the United States.
 The series focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish.
 Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High, where they attend middle school.
The sixth season of the British-American animated television series "The Amazing World of Gumball", created by Ben Bocquelet, will air on Cartoon Network in the United States in 2018.
 The series focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a goldfish.
 Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High, where they attend middle school.
 Unlike the previous seasons of the show, this season will have 44 episodes.
 This season will contain the show's 200th episode.