Trapping the 3-Headed monster

"No my grandchildren! Now is not the time to face your destiny! But for your father, the time has come for him...."

The year is ???? B.C. King Ghidorah had recently arrived from outer space. Shortly after landing, he managed to influence many Kaiju across the world to join his cause, officially creating the Destroyer Kaiju faction. But before he could destroy the planet, he met Godzilla's father (Gojira JR) and Mothra. Godzilla and his brother Dagon, arrived in present day Antarctica to help him, but were stopped by their grandfather Gojira. As Godzilla's father fought King Ghidorah, he knew that it was going to take a lot more than a few atomic breaths and help from Mothra to stop Ghidorah. So he channeled in energy that he had been storing up to this very moment, as Godzilla's father became Burning Godzilla. Godzilla and Dagon, seeing their father melt before them was almost too much to bear. They wanted to help, but Gojira would not let them. As Gojira lead Godzilla and Dagon away from the scene, Godzilla's father took one last look at his children and his own father, knowing that his children would now be under the care of his strict father, but hoped they would be different from him, as he was. Godzilla's Father eventually managed to open a hole below Ghidorah. As Ghidorah fell into the pit, Godzilla's father used the remaining energy he had left to melt the snow around him, so Mothra could turn it into ice with her powers. Mothra did so. Encasing Ghidorah in Ice as he desperately tried to free himself, until Ghidorah was completely trapped in his ice prison. Godzilla's father took a look at Ghidorah, then at Mothra, and then at his children swimming away with his father. Gojira JR was disappointed knowing his children would have to endure the hardships of his father, but he knew it was the only way for his sons to achieve their destinies. And then, Gojira JR completely melted away...

In death, the spirit of Godzilla's father watched over his children and father. Seeing them participate in the Great Kaiju War, and God's war against Zeus. Gojira JR was disappointed his father was still teaching the two brothers how one day, Humanity will one day turn on the Kaiju, as well as Gojira's own views on how to protect the planet, including protecting it from Humanity. But thankfully, Godzilla and Dagon didn't believe it, as both of them still held onto their beliefs that it was their duty to protect Humanity and Earth. Godzilla's father could only watch, as Dagon was brutally murdered by MUTO Prime, and watching Godzilla letting out his anger on humanity out of blind rage and influence from Gojira. The Spirit of Godzilla's father (And Mothra) helped to guide Godzilla to protect Humanity. Later on, Godzilla's outer appearance changed as he grew older, taking on a form exactly the same as his brother, Dagon. Centuries later, Godzilla knew it was time to face his grandfather in Tokyo, Japan in 1954, when his Grandfather rampaged the city...