Fergus (also Feargus) Gwynplaine MacIntyre is a Scottish-born journalist, novelist, poet and illustrator, who now resides in Wales and New York City. MacIntyre's writings include the science-fiction novel The Woman Between the Worlds and his anthology of verse and humor pieces MacIntyre's Improbable Bestiary. As an uncredited “ghost” author, MacIntyre is known to have written or co-written several other books, including at least one novel in the Tom Swift IV series, The DNA Disaster, published as by Victor Appleton (a house pseudonym) but with MacIntyre's name on the acknowledgments page.
Although MacIntyre has professionally published many works of non-fiction and literature, he is best known as an author of genre fiction: specifically, science fiction, fantasy, horror and mystery stories. His short stories have been published in Weird Tales, Analog, Asimov's Science Fiction, Amazing Stories, Absolute Magnitude, Interzone, the Strand Magazine and numerous anthologies, including Terry Carr's Best Science Fiction of the Year #10, Michael Reaves's and John Pelan's mystery/horror anthology Shadows Over Baker Street, James Robert Smith's and Stephen Mark Rainey's horror anthology Evermore, and Stephen Jones's The Mammoth Book of Best New Horror. For Mike Ashley's The Mammoth Book of Historical Detectives, MacIntyre wrote "Death in the Dawntime", a locked room mystery (or rather, sealed cave mystery) set in Australia around 35,000 BC, which Ashley suggests is the furthest in the past a historical whodunnit has been set. 
In addition to publishing science fiction in Analog, MacIntyre has also contributed to that magazine as an artist, illustrating his own stories and some by Ron Goulart. MacIntyre has also published stories in the Russian-language science fiction magazine Esli.
A characteristic of MacIntyre's writing (both fiction and non-fiction) is his penchant for coining new words and resurrecting obscure words. Language authority William Safire has acknowledged MacIntyre's neologisms.
From October 2002 through November 2005, MacIntyre was a regular contributor to the “Big Town” feature of the New York Daily News, publishing more than 30 by-lined articles about Broadway musicals, restaurants, songwriters, athletes, and other figures in New York City's history. The May 2, 2007 issue of the New York Press carried his first by-lined article for that paper.
MacIntyre has written a considerable number of book reviews for The Magazine of Fantasy & Science Fiction. In the July 2003 issue of that magazine, MacIntyre mentioned that he is related to the wife of Scottish author Eric Linklater. This admission is significant, as MacIntyre has stated (in interviews and at science-fiction conventions) that he is estranged from his abusive family and does not acknowledge them. He has legally changed his name, officially filing a deed poll: "Fergus MacIntyre" is therefore his legal name but not his birth name. He has acknowledged that he took the name "Gwynplaine" from the protagonist of The Man Who Laughs, a novel by Victor Hugo.
As a screenwriter, MacIntyre contributed substantial script material to a 2006 documentary about actress Theda Bara, The Woman with the Hungry Eyes: his contributions included the film's title and an interview he had conducted with author Fritz Leiber. Contractually prevented from receiving a screenplay by-line, MacIntyre received "special thanks" in the film's credits. 
Novels and collections include:
Short stories include: