In the original 6-issue "Harsh Realm" comic-book created by James D. Hudnall and Andrew Paquette, set in the future, a detective named Dexter Green was hired by a family to find their missing son, who disappeared into a "pocket universe" (created by scientists for travel purposes), this one being a fantasy world with wizards, warriors and dragons (much like "Lord of the Rings" or "Dungeons & Dragons"). The Fox TV series completely does away with the "fantasy" aspect and uses a setting similar to The Matrix (1999) (which was a huge phenomenon at the time).
The chair Hobbes sits in to enter Harsh Realm has "siege" and "perilous" on its armrests. This is a reference to the legend of King Arthur, and a similar chair that would turn anybody but the bravest person in England into ash if they sat in it.
The term "harsh realm" originates from the grunge speak hoax of 1992 when a sales representative from Sub Pop Records told a persistent New York Times reporter that the grunge kids in Seattle had their own terminology (they didn't) and that "harsh realm" was one of their key expressions (it wasn't).
James D. Hudnall and Andrew Paquette, the creators of the original "Harsh Realm" comic-book sued Chris Carter and the Fox Network for credit (they got no credit on the show) and won. Many wrongly speculated that this widely-publicized lawsuit brought about the series' sudden cancellation. It was actually a struggle between Carter and Fox that got the series cancelled.