Question: Club Kids were led by the author who was a collaborator with whom?

Context paragraphs:
Willow Dawson: Willow Dawson is a Canadian cartoonist and illustrator, whose works include "The Big Green Book of the Big Blue Sea" with author Helaine Becker (Kids Can Press), "Hyena in Petticoats: The Story of Suffragette Nellie McClung" (Penguin Books Canada), "Lila and Ecco's Do-It-Yourself Comics Club" (Kids Can Press), "100 Mile House" (excerpts on Top Shelf Comics 2.0), the graphic novel "No Girls Allowed", with author Susan Hughes (Kids Can Press), and "Violet Miranda: Girl Pirate", with author Emily Pohl-Weary (Kiss Machine).  Her works have been supported by the Canada Council for the Arts, the Ontario Arts Council and the Toronto Arts Council.

Party Monster (film): Party Monster is a 2003 American factually based biographical drama film directed by Fenton Bailey and Randy Barbato, and starring Macaulay Culkin as the drug-addled "king of the Club Kids".  The film tells the story of rise and fall of the infamous New York City party promoter Michael Alig.  This was Macaulay Culkin's first film in nearly nine years since his starring role in the 1994 film "Richie Rich".

James St. James: James St. James (born James Clark August 1, 1966) is an American television personality, author, celebutante, frequent collaborator with Mathu Andersen, and former Club Kids member of the New York City club scene in the late 1980s and early 1990s.

Kids club: A kids club, children's club or mini club is a childcare facility (daycare), which includes a fully staffed mini playground or complete village specially designed for children; is usually offered by private companies, health and fitness clubs, major sports events, trade fairs, etc.; and educates and engages children for short periods of time (2–3 h) or for the whole day depending on how long the parents are needing the care for.  Kids are entertained in a playful, dynamic, and stylish environment.  Kids clubs offer a wide range of activities such as art, music and dancing, maritime and animal experiences, cookery and nature experiences, language and sports lessons, etc.  Often babies and toddlers under the age of 2 require an adult to attend the kids club with them.  This can be provided by the kids club in the form of an extra babysitter for a cost or the parents/guardians need to watch them while they play.

Richie Rich (designer): Richard J. Eichhorn, better known by his stage name Richie Rich, is an American fashion designer, socialite, television personality, figure skater and singer.  Born in California, Rich began his career as a figure skater touring with the entertainment show Ice Capades.  He first rose to prominence in the 1990s, as a part of the group of club personalities, Club Kids, after becoming a fixture on the New York City club scene, alongside Amanda Lepore and others.

Walt Cassidy (artist): Walt Cassidy, born in Los Alamitos California, is a New York City-based artist, notable for his contemporary art and participation in the New York City Club Kids culture.  His exploratory art and design emphasizes narrative abstraction, aestheticism, and conceptualism.

Kevin Johnn: Kevin Johnn is American fashion designer.  He was one of the original designers of "Project Runway" on Bravo.  He also appeared on the Axis Networks reality show Club Kids (2013-2014).

Andre Melendez: Andre Melendez (c. May 1, 1971 – March 17, 1996), better known as Angel Melendez, was a member of the Club Kids and purported drug dealer who lived and worked in New York City.  He was murdered by Michael Alig and Robert "Freeze" Riggs on March 17, 1996.

Club Kids: The Club Kids were a group of young New York City dance club personalities led by Michael Alig and James St. James in the late 1980s and early 1990s.  The group was notable for its members' flamboyant behavior and outrageous costumes.  In 1988, writer Michael Musto wrote about the Club Kids' "cult of crazy fashion and petulance": "They ... are terminally superficial, have dubious aesthetic values, and are master manipulators, exploiters, and, thank God, partiers."

Michael Alig: Michael Alig (born April 29, 1966) is an American former club promoter, musician, and writer who served almost 17 years in prison for manslaughter.  Alig was a founder and ringleader of the Club Kids, a group of young New York City clubgoers that became a cultural phenomenon during the late 1980s and early 1990s.

Supporting paragraphs: Club Kids James St. James
Answer: Mathu Andersen