Not to be confused with Gorgosaurus, a real dinosaur.
Gorosaurus is a kaiju who first appeared in Toho's 1967 film King Kong Escapes. He was an opponent of King Kong in the film, and he later enjoyed a prominent role in 1968's Destroy All Monsters. Gorosaurus is a typical giant dinosaur, having no special powers like beams or energy weapons, relying on his strength and athleticism to fight. Gorosaurus' most identifiable fighting move is a leaping kick similar to that of a kangaroo. Gorosaurus is an allosaurid, an abrupt descendant of Allosaurus itself.
In King Kong Escapes, Gorosaurus is an inhabitant of Mondo Island, the film's primary setting. He attacks and attempts to devour the leading female character, Susan Watson. King Kong arrives to save her and fights Gorosaurus. Kong eventually breaks the dinosaur's jaws, defeating Gorosaurus.
In the film All Monsters Attack, Gorosaurus appears in the dreams of a young boy.
In the film Godzilla vs. Gigan, Gorosaurus is seen living on Monster Island.
In Destroy All Monsters, Gorosaurus appears on a new island, Monsterland. It is an artificially created environment for the monsters of Earth. He 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 original and the English dubbed version, Gorosaurus is misidentified as Baragon in the Paris attack. Gorosaurus had to substitute for the digging monster Baragon because the Baragon suit was reworked several times for monsters in the Ultraman series and not usable beyond the glimpse at the end of the film. The scene was scripted with Baragon, and the dialogue was never rerecorded.) 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 he twice brings down Ghidorah (the only monster who is able to), the first by pulling on his necks until it falls, heralding the turn of the tide of battle to the Earth monsters's side, and second when he used his kangaroo kick to slam Ghidorah to the ground as Godzilla and Anguirus attack two of the heads, leaving Ghidorah helpless and vulnerable. After killing Ghidorah, Gorosaurus and the other Earth monsters return to Monsterland to live in peace.
- King Kong Escapes (1967)
- Destroy All Monsters (1968)
- All Monsters Attack (1969, stock footage cameo)
- Godzilla vs. Gigan (1972, stock Footage cameo)
- Ike! Godman (1972)
- Godzilla Island (1997-1998)
- Kaijū-ō Godzilla / King of the Monsters, Godzilla (Game Boy - 1993)
- Godzilla Trading Battle (PlayStation - 1998)
- Godzilla: Rulers of Earth (2013)
- The Godzilla Movie Studio Tour