・Height: 50 meters. ・Body color: Black. ・A dinosaur-like bipedal monster. ・Has dorsal fins and a long tail. ・Hates humanity and destroys cities. ・Occasionally allies with humanity when a global crisis looms. ・Fires an atomic breath from its mouth after its dorsal fins glow blue. ・Basically black in color. ・When attacked, it turns toward the source of the attack. ・Its body is extremely durable, repelling shells and missiles; its skin is flexible and heals quickly even if wounded. ・Has the ability to sense nuclear fuel (its energy source) and the presence of other monsters. ・Appearance is based on Final Wars (FW) Godzilla. ・Has a child named Minilla. ・Unlike Godzilla, Minilla is gentle and kind-hearted, behaving friendly toward humans. **Weaknesses** ・Vulnerable to the Oxygen Destroyer, which once wiped out its species. ・Temporarily ceases activity if cadmium rounds or blood coagulants are administered into its body. ・Like most bipedal monsters, it will fall if the ground beneath its feet is detonated.

・Height: 50 meters. ・Body color: Green. ・A turtle-like bipedal monster. ・An ally to human children. ・Allies with humanity when a global crisis looms. ・Attacks by breathing fire or shooting fireballs. ・Retracts its limbs to spray jet propulsion from the openings in its shell, spinning to fly. Sometimes flies horizontally with its front limbs extended. ・Its shell is extremely durable, repelling shells and missiles. ・Has the ability to sense nuclear fuel and the presence of other monsters. ・Generally does not retaliate even if attacked by humans. ・Appearance is based on G1 Gamera.

・Males are 60 meters tall; females are 50 meters tall; children are 30 meters tall. ・The entire body, from the thick torso to the limbs and tail, is covered in triangular scales. It has large wings on its back and is adapted for land, sea, and air. ・Exists as a family unit (father, mother, and child). Males have larger horns. The bond between the mated pair is excellent, and their devotion to their offspring exceeds that of humans. ・On Monster Island, the Gappa child is often seen playing with Minilla.

・Height: 40 meters. ・An ancient monster said to be a survivor of the dinosaur species Gomorasaurus. It has a simple, orthodox dinosaur-like form characterized by two large crescent-shaped horns, a single horn on its snout, pinecone-like scales on its front, and a thick, massive tail. ・Fires a Super Oscillatory Wave from the horn on its snout.

・Body length: 55 meters. ・Wingspan: 135 meters. ・A giant monster that can be called a symbol of peace. ・The larva uses silk as a weapon, while the adult uses poisonous scales and 500-meter-per-second winds generated by its massive wings. ・The Mothra larvae on this island are twins.

・Height: 60 meters. ・Characterized by an upright dinosaur-like physique with a single crescent-shaped horn, giving it a classic dinosaur silhouette. ・Possesses durable skin and skeleton. Its primary weapons are the sharp "Slash Horn" on its head and the "Magma Ray" fired from its mouth. Its tail, which has 2,000 times the strength of steel, and its natural brute strength are also powerful weapons; a single tail swipe is devastating.

・Height: 50 meters. ・A monster originating from Korea. ・Weapons include fire breath from its mouth and a cutting beam fired from its horn.

・Height: 60 meters. ・Godzilla's primary subordinate monster. Other subordinates include Rodan, Varan, Gorosaurus, Baragon, Kumonga, and Kamacuras. ・Uses the spikes on its back and tail as weapons. ・Moves with great agility due to having brains located in multiple parts of its body.

・A monster with a child. The child is often seen playing with Minilla and the Gappa child.

Various other monsters inhabit the island. Gabara Manda Gezora Kamoebas Ganimes Red King Chandlar Magular Kemular Pagos Gabora Neronga Mongler Agon Giant Mantis (The Deadly Mantis) Giant Ants (Them!) Reptilicus Behemoth Rhedosaurus