Updated: January 23, 2023

From the 1940's to the present many swamp monsters have been used in comics, an early example being Hillman Publications the Heap.

Afterwards, both DC Comics and Marvel created similar characters:

DC has the Swamp Thing, created by Len Wein and Berni Wrightson. Marvel has the Man-Thing, sasquatch created by Stan Lee, Gray Morrow, Roy Thomas, and Gerry Conway. The debuts of the two characters were so close that it is impossible to say which came first. Alan Moore, who worked on Swamp Thing for a period, later described the character's original incarnation as "a regurgitation of Hillman Comics The Heap", adding that "When I took over that character at Len Wein's suggestion, I did my best to make it an original character that didn't owe a huge debt to previously existing swamp monsters."

Other swamp monsters in comics include:

Solomon Grundy, a swamp zombie created by Alfred Bester and Paul Reinman for DC Comics The Glob, created by Roy Thomas and Herb Trimpe for Marvel Comics Swamp Beast from Monster in My Pocket by Dwayne McDuffie and Gil Kane for Harvey Comics. Bog Swamp Demon, a fictional character appearing in Teenage Mutant Ninja Turtles comic books. Danny Dunn and the Swamp Monster by Raymond Abrashkin and Jay Williams.

In the anime and manga Princess Resurrection, the characters are attacked by a tribe of monsters resembling the creature while vacationing by a lagoon, who desire Hime's blood to make them immortal and keep their kind from dying out. In a possible reference to the novel version of the movie, one of the creatures is roughly 30 feet tall. In the anime and manga One Piece, the Straw Hat Pirates are attacked by Caribou who has eaten the Swamp Swamp Fruit (a Logia-type Devil Fruit that lets its consumer generate, control, and turn into a "swamp").