Mud-Thing

The Mud-Thing is the name attributed to a fictional comic book supervillain featured in comics published by Marvel Comics. The character was part of the mainstream Marvel Universe and first appeared in Amazing Spider-Man, Volume 1 #217 in June, 1981. It also appeared in the following issue, Amazing Spider-Man, Volume 1 #218 in July, 1981.

Overview
The Mud-Thing was a large, monstrous creature that once fought Spider-Man. The Mud-Thing was actually an amalgamation of two of Spider-Man's other foes, William Baker, aka the Sandman and Morrie Bench, aka Hydro-Man.

Powers

 * Bio-fission: The Mud-Thing came about when the Sandman and Hydro-Man accidentally mixed their molecular components together after being submerged in the river.