After the Godzilla went nuclear, he knew that since Gidorah was weakened he bit off the alpha head, and swallowed it to make sure that it could not regenerate again.
Ghidorah deliberately consumes Vivienne Graham, devastating Ishiro Serizawa. The right head also tries to eat the ice that falls from the middle head's mouth.
Godzilla managed to absorb the energy from the beams and combined it with his atomic breath, unleashing a powerful blast that completely destroyed Ghidorah.
In Rebirth of Mothra III (1998), King Ghidorah is depicted as an extraterrestrial that landed on earth during the Cretaceous Period of the Mesozoic Era and wiped out the dinosaurs by draining them of their life energies. Ghidorah left Earth and returns in modern times to feed on human children.
As with his Showa counterpart, Ghidorah is a space three-headed dragon kaiju that is responsible for the destruction of countless worlds.
In Rebirth of Mothra 3, King Ghidorah nearly wiped out the dinosaurs during the Cretaceous Period, then returned to Earth in the modern day to feed on humanity. In Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack, King Ghidorah is one of the Guardian Monsters, being the God of the Sky.
King Ghidorah destroyed Venus' entire civilization thousands of years ago, and attempted to do the same to Earth, only to be thwarted by the planet's monsters.
Ghidorah Loses a Head
Before the Oxygen Destroyer breaks up the fight, Godzilla is able to sever one of Ghidorah's three heads. Godzilla also decapitates Ghidorah in 1991's Godzilla vs. King Ghidorah, but in that instance he severed the kaiju's middle head.
Rodan (ラドン, Radon?) of the MonsterVerse, also dubbed Titanus Rodan, is a giant flying pterosaur daikaiju created by Legendary Pictures that first appeared in the 2019 film, Godzilla: King of the Monsters, serving as a major antagonist.
Not counting Cretaceous King Ghidorah, the GMK King Ghidorah is the smallest incarnation of the character, as well as the only one to be shorter than the Godzilla incarnation it appeared with.
According to cranial scans, King Ghidorah has a divergent frontal lobe density in the brains of all three heads, indicating that each of his heads can have disparate levels of cognitive functions, possibly including independent thought.
King Ghidorah showed that Godzilla mutated from a late-surviving theropod dinosaur. The carnivore looked like the old, dumpy restorations of Tyrannosaurus from the mid-20th century, and, no surprise, the fictional dinosaur is known as Godzillasaurus.
Admittedly, Godzilla won the fight in the ocean because the water gave him the advantage, but that wasn't the only instance of Godzilla beating Ghidorah in the MonsterVerse.
DesGhidorah also known the Demon from Mars is a Space Kaiju and a member of the Ghidorah, he is even the younger brother of King Ghidorah. 65 million years ago, he and King Ghidorah came to Terra and caused the KT Extinction but he was soon defeated by Gigamoth and was sealed away under Infant Island.
Godzilla himself doesn't eat, he feeds on radiation. His species, on the other hand, is most likely omnivorous, as Godzilla Junior fed on plants and meat when he was young. Once he was a sub-adult, he even ate whales. Radiation or Cosmic energy as SpaceGodzilla.
After calculation, Godzilla requires approximately 215,000,000 calories to survive per day. It is unlikely it would be able to attain this kind of energy intake (ignoring eating radiation!)
Rodan (ラドン Radon) is a giant Pteranodon kaiju who first appeared in the 1956 Toho film Rodan, and made his first appearance alongside Godzilla in the 1964 Godzilla film Ghidorah, the Three-Headed Monster. Two individual Rodans, a male and a female, were featured in the character's debut film.
Rodan possesses an internal volcanic combustion system; causing him to radiate heat, the temperature of which can reach up to 1200°C.
Gigan is a space monster resembling a species of reptile who was turned into a cyborg by the Nebulans. Gigan sports a huge buzzsaw in its frontal abdominal region and large metallic hooks for hands.
They fight at equal strength, each immune to the other's attacks. With M-11 and Terasawa's aid, Emmy sabotages the UFO's control over King Ghidorah, causing the three-headed monster to lose focus during the battle. Godzilla eventually ends the battle by blasting off Ghidorah's middle head.
Though Ghidorah is more evil because his plan concerns the whole Earth rather than just a localized place, and Ghidorah maliciously slaughters humans for pleasure rather than mere hunger.
Godzilla Earth, otherwise simply known as Godzilla, is the titular central antagonist of the GODZILLA anime trilogy. He is a giant plant-based monster who evolved to become the most powerful lifeform on the planet.
King Ghidorah is a powerful extraterrestrial that ancient peoples believed to be a powerful demon who came from the stars to battle the "Incarnation of God".
Queen Ghidorah is one of very few kaiju with a humanoid form, and the most popular, if not the only, instance of a female Ghidorah, without being an outright gender-swap of King Ghidorah.
Godzilla has the best record in the Monsterverse. He has defeated King Ghidorah, Kong, the MUTOs, and helped defeat Mechagodzilla. It is for that reason he rightfully bears the title King of the Monsters.