Writer, editor, role player and games designer, and sometimes musician/singer and actor, Robbie Matthews's association with speculative fiction fandom dates back to the 1980s. During his early years he was part of the Sydney SF scene but effectively ended following the birth of his children. He started writing seriously after attending Aussiecon III in 1999 and that same year he had his first story, 'Map Magic, accepted for publication. Since 2000 Matthews has been heavily involved in the Canberra Speculative Fiction Guild (CSFG), and was a founding member of the Andromeda Spaceways Publishing Co-operative Ltd. With the latter organisation has served primarily in the roles of editor and Editor in Chief of its flagship publication, Andromeda Spaceways Inflight Magazine (ASIM).
Matthews has had stories published in the CSFG anthologies Nor of Human… (2001), Machinations (2002), Elsewhere (2003) and Gastronomicon (2005), along with AustrAlien Absurdities (2001) and Daikaiju! 3 (2007). His works have also appeared in Antipodean SF, ASIM, Fables and Reflections, Potato Monkey, Jackhammer, and Charge Magazine. His collection, Johnny Phillips, Werewolf Detective: the Collected Case Files was published in 2008, and subsequently shortlisted for the 2009 Aurealis Awards for Best Collection.
During his career Matthews has won the 2002 Peter McNamara Convenors Award (part of the Aurealis Awards) and Best New Designer Award (2003) for And Now Presenting: Murder!!!, a role playing module which made its debut at that year's Phenomenon convention. The 2003 convention also saw him win awards for Best Team (Draca Draca), Player's Choice (A Superstitious and Cowardly Lot) and Best Player (From the End of a Sword).
A resident of Canberra for many years Matthews set up his own computer consultancy business, Mithril Software, in 1993 and since 2006 has been involved with the Rude Mechanicals theatre company (as both actor and webmaster). At the 2010 Phenomenon convention he and his daughter Stephanie presented their roleplaying game, The Mystery Shack, following it in 2011 with Jusenkyo or Bust! His son Nick made his Phenomenon debut as a writer in 2012 with as co-writer of Antiques Roadshow of Doom (with Stuart Barrow)