Gorosaurus

In King Kong Escapes, Gorosaurus is an inhabitant of Mondo Island, the film's primary setting. It attacks and attempts to devour the leading female character, Susan Watson. King Kong arrives to save her and fights Gorosaurus. King Kong eventually breaks Gorosaurus' jaws, in a way analogous to how he did with the Tyrannosaurus rex who tried to eat Ann Darrow in the original film.

In the film All Monsters Attack, Gorosaurus makes a brief appearance in a young boy's dreams.

In the film Godzilla vs. Gigan, Gorosaurus is briefly seen living on Monster Island.

In Destroy All Monsters, Gorosaurus appears on the Ogasawara Islands, in Monsterland. It is an artificially created environment for the monsters of Earth. It lives with other monsters including Godzilla, Mothra, Rodan, Anguirus, Kumonga, Manda, Minilla, Baragon and Varan. A race of aliens called the Kilaaks invades Earth, capturing and establishing mind-control over the monsters. They then release them in cities throughout the world, with Gorosaurus being released in Paris, France (in both the Japanese original and the English dubbed version, Gorosaurus is misidentified as Baragon in the Paris attack). However, the humans retaliate and find a way to break the mind control.

The Kilaaks then unleash the space dragon King Ghidorah to kill the Earth monsters. Gorosaurus plays a pivotal role in the battle, as it twice brings down Ghidorah (the only monster who is able to do so), the first by pulling on its necks until it falls, heralding the turn of the tide of battle to the Earth monsters' side, and the second when it used its kangaroo kick to knock him over again, as Godzilla, Minilla and Anguirus attack all three of its heads, leaving Ghidorah vulnerable. After killing Ghidorah, Gorosaurus and the other Earth monsters return to Monsterland to live in peace.

Gorosaurus returned in Godzilla: Monster Apocalypse, a prequel novel to Godzilla: Planet of the Monsters. It appeared in Paris on November of 2039, 5 years after Godzilla destroys Western Europe. A month later, humanity fought against Gorosaurus as a part of Operation Eternal Light, a plan to retake Europe. Gorosaurus is lured into the Vexin Français Natural Regional Park by using two Super-X II, which was destroyed by the monster. Gorosaurus is then destroyed alongside a Bilosaludo space ship.

In Godzilla: Project Mechagodzilla, a prequel novel to Godzilla: City on the Edge of Battle, Gorosaurus emerged somewhere near the Himalayas.