Zilla

Zilla is Toho Studio's official name for the titular creature of the 1998 American film GODZILLA. The creature has also appeared in Godzilla: The Series as a cyborg, its 1998 attack been mentioned in Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack and another version of the creature appeared in Godzilla Final Wars.

Zilla is a giant mutated Marine Iguana originating from a nuclear test in French Polynesia. As the test was done in 1968, the creature (or perhaps species) grew over a period of approximately thirty years. Its irradiated genes caused it to achieve a height of over sixty meters (about two-hundred feet). Physically it resembles a giant-sized, allosaurine-like, flesh-eating dinosaur of some sort. He has rough, square-shaped (from side view) jaws, a long neck, large, fin-shaped dorsal spines (which differ greatly from the maple leaf-shaped spines of Godzilla), and long, powerful legs and arms. He also possesses a seemingly vestigial toe, on the back of, and three dinosaur-like toes on the front of each foot.