Grendel, the prominent space slug, also known as an Exogorth, served as the central adversary in The Slug Named Grendel, the important book by Rogar Farnoster. Flandon Sweeg, a spacer who was in search of the massive slug in the Borkeen Belt where it resided, had Grendel as his objective. Many people considered him to be nothing more than a myth; they thought he was incredibly large, exceptionally intelligent, and famous for his intense dislike of both humans and starships.