Swamp Thing Annual #6 was published by DC Comics on January 1, 1991, as part of a series that began in 1985. Marc N'Guessan and Nancy A. Collins write, and art comes from Bill Jaaska, John Higgins and Rick Bryant. This 68-page issue features Swamp Thing, Abby Holland, Tefé Holland, Chester Williams and Liz Tremayne, among 9 characters cataloged on VerseDB.