A swamp monster (also variously called a swamp creature, swamp man, or muck monster) is a fictional or mythological creature imagined to lurk in a swamp.
Some swamp monsters resemble aquatic creatures, while other swamp monsters resemble aquatic plants and moss. They are generally depicted as fierce and destructive; a confrontation with one presents a lethal hazard. Below is a list of the known swamp monsters in folklore and different media appearances.
From the 1940s 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:
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: