Question: Joey Richter co-starred as which Harry Potter character in 2009 fan parody musicals?

full_context: Document 1: Jonathan Groff: Jonathan Drew Groff (born March 26, 1985) is an American actor and singer.
Document 2: Rubeus Hagrid: Rubeus Hagrid is a fictional character in the "Harry Potter" book series written by J. K. Rowling. He is introduced in "Harry Potter and the Philosophers Stone" as a half-giant and half-human who is the gamekeeper and Keeper of Keys and Grounds of Hogwarts, the primary setting for the first six novels. In the third novel "Harry Potter and the Prisoner of Azkaban", Hagrid is promoted to Care of Magical Creatures teacher, and is later revealed to be a member of the Order of the Phoenix.
Document 3: Harry Potter and the Philosopher's Stone: Harry Potter and the Philosopher's Stone is the first novel in the "Harry Potter" series and J. K. Rowling's debut novel, first published in 1997 by Bloomsbury. It was published in the United States as Harry Potter and the Sorcerer's Stone by Scholastic Corporation in 1998. The plot follows Harry Potter, a young wizard who discovers his magical heritage as he makes close friends and a few enemies in his first year at the Hogwarts School of Witchcraft and Wizardry. With the help of his friends, Harry faces an attempted comeback by the dark wizard Lord Voldemort, who killed Harry's parents, but failed to kill Harry when he was just 15 months old.
Document 4: Joey Richter: Joseph Michael "Joey" Richter (born July 31, 1989) is an American actor, singer, and internet personality. Richter co-starred as Ron Weasley in the fan-parody musicals, "A Very Potter Musical" (2009), "A Very Potter Sequel" (2010) and "A Very Potter Senior Year" (2012) with Bonnie Gruesen and Glee star Darren Criss, created by University of Michigan theatre group, StarKid Productions. He starred in leading roles in two other StarKid productions: as a fictionalized version of himself in the musical "Me and My Dick" (2009) and as Bug in "Starship" (2011). Richter graduated from the University of Michigan in 2011. Richter also performed on The SPACE Tour along with several fellow Starkids. In 2012, Richter performed in Starkid's Apocalyptour.
Document 5: Ron Weasley: Ronald Bilius "Ron" Weasley is a fictional character in J. K. Rowling's "Harry Potter" series. His first appearance was in the first book of the series, "Harry Potter and the Philosopher's Stone" as the best friend of Harry Potter and Hermione Granger. He is a member of the Weasley family, a pure blood family, who reside in "The Burrow" outside Ottery St. Catchpole. Along with Harry and Hermione, he is a member of the Gryffindor house. Ron is present in most of the action throughout the series.
Document 6: Rupert Grint: Rupert Alexander Lloyd Grint (born 24 August 1988) is an English actor and producer. He rose to prominence playing Ron Weasley, one of the three main characters in the "Harry Potter" film series. Grint was cast as Ron at the age of 11, having previously acted only in school plays and at his local theatre group. From 2001 to 2011, he starred in all eight "Harry Potter" films alongside Daniel Radcliffe playing as Harry Potter and Emma Watson playing as Hermione Granger.
Document 7: Darren Criss: Darren Everett Criss (born February 5, 1987) is an American actor, singer and songwriter. One of the founding members and co-owners of StarKid Productions, a musical theater company based in Chicago, Criss first garnered attention playing the lead role of Harry Potter in StarKid's musical production of "A Very Potter Musical". The theater troupe made "Billboard" history when their original album, "Me and My Dick", became the first charting student-produced musical recording , debuting at number eleven on the Top Cast Albums chart in 2010.
Document 8: A Very StarKid Album: A Very StarKid Album contains several songs from the musical "A Very Potter Sequel", sequel to the Harry Potter parody musical "A Very Potter Musical", produced by StarKid Productions with music and lyrics by Darren Criss (who also starred in both musicals as Harry Potter), and book by Matt Lang, Nick Lang, and Brian Holden. The album features seven of the twelve songs from "A Very Potter Sequel" as well as tracks from others members of the group. Songs from the musical that were absent from the album were later released as the "A Very Potter Sequel" soundtrack. The album was released digitally through iTunes and Amazon.com on July 22, 2010, and was made available on the StarKid Productions Bandcamp page on August 3, 2010. The album reached No. 14 on the iTunes Pop Charts and No. 27 out of all Top Albums officially topping Lady Gaga (#29) and "Glee" (#31) on the charts. The album also reached No. 19 on Top Compilations.
Document 9: A Very Potter Sequel: A Very Potter Sequel (often shortened to AVPS) is a musical with music and lyrics by Darren Criss and a book by Matt Lang, Nick Lang, and Brian Holden. The story is a parody, based on several of the "Harry Potter" novels (particularly "Harry Potter and the Philosopher's Stone", "Harry Potter and the Prisoner of Azkaban" and "Harry Potter and the Order of the Phoenix") by J. K. Rowling, as well as their film counterparts.
Document 10: A Very Potter Senior Year: A Very Potter Senior Year (often shortened to AVPSY) is a musical written by Matt Lang, Nick Lang, and Brian Holden with songs by Clark Baxtresser, Pierce Siebers, A. J. Holmes, and additional songs by Darren Criss. It is the conclusion of the "Very Potter" trilogy of "Harry Potter"-inspired musicals produced over four years by StarKid Productions. Rather than a full musical, as with its previous installments, the production took the form of a live staged reading of the script with performances of the songs at LeakyCon in Chicago, Illinois, on August 11, 2012. It featured nearly all of the StarKid actors and actresses, including actor Darren Criss, who returned to the company to reprise his role as Harry Potter, and Evanna Lynch as Luna Lovegood, who played the character in the original film series.
Document 11: Harry Potter and the Philosopher's Stone: Harry Potter and the Philosopher's Stone is the first novel in the "Harry Potter" series and J. K. Rowling's debut novel, first published in 1997 by Bloomsbury. It was published in the United States as Harry Potter and the Sorcerer's Stone by Scholastic Corporation in 1998. The plot follows Harry Potter, a young wizard who discovers his magical heritage as he makes close friends and a few enemies in his first year at the Hogwarts School of Witchcraft and Wizardry. With the help of his friends, Harry faces an attempted comeback by the dark wizard Lord Voldemort, who killed Harry's parents, but failed to kill Harry when he was just 15 months old.
Document 12: Hermione Granger: Hermione Jean Granger ( ) is a fictional character in J. K. Rowling's "Harry Potter" series. She first appears in "Harry Potter and the Philosopher's Stone", as a new student on her way to Hogwarts. After Harry and Ron save her from a mountain troll in the girls' toilets, she becomes best friends with them and often uses her quick wit, deft recall, and encyclopaedic knowledge to help them. Rowling has stated that Hermione resembles herself at a younger age, with her insecurity and fear of failure.
Document 13: Lord Voldemort: Lord Voldemort ( , or in the films; born Tom Marvolo Riddle) is a fictional character and the main antagonist in J. K. Rowling's series of "Harry Potter" novels. Voldemort first appeared in "Harry Potter and the Philosopher's Stone", which was released in 1997. Voldemort appears either in person or in flashbacks in each book and its film adaptation in the series, except the third, "Harry Potter and the Prisoner of Azkaban", where he is only mentioned.
Document 14: Harry Potter and the Philosopher's Stone (film): Harry Potter and the Philosopher's Stone (released in some countries as Harry Potter and the Sorcerer's Stone) is a 2001 British-American fantasy film directed by Chris Columbus and distributed by Warner Bros. Pictures. It is based on the novel of the same name by J. K. Rowling. The film is the first instalment in the long-running "Harry Potter" film series, and was written by Steve Kloves and produced by David Heyman. Its story follows Harry Potter's first year at Hogwarts School of Witchcraft and Wizardry as he discovers that he is a famous wizard and begins his education. The film stars Daniel Radcliffe as Harry Potter, with Rupert Grint as Ron Weasley, and Emma Watson as Hermione Granger.
Document 15: A Very Potter Musical: A Very Potter Musical (originally titled Harry Potter: The Musical and often shortened to AVPM) is a musical with music and lyrics by Darren Criss and A. J. Holmes and a book by Matt Lang, Nick Lang and Brian Holden. The story is a parody, based on several of the "Harry Potter" novels (particularly "Harry Potter and the Philosopher's Stone", "Harry Potter and the Goblet of Fire" and "Harry Potter and the Deathly Hallows") by J. K. Rowling, as well as their film counterparts.
ground_truth: Ronald Bilius "Ron" Weasley