A New Start
The merged are known as the children of the pantheons. After the old gods decided to accept the existence of the other pantheons children were born from between the pantheons. However there was a war between the old gods and the children, and eventually all that was left was the Merged. Many events have transpired after that which lead to the recreation of the earth after wiping out most of the mortals.
It has been 30 years since the world had to be rebooted. The humans had been why such a reboot was needed. They first tried to play god by bringing back the dead. After that they caused irreversible damage to the earth through their wars. After the war between the resurrected old gods and the merged the earth was damaged more. And then the final nail in the coffin was hit when the mortals decided to rise up against the gods to prove that the gods were useless.
The earth had enough of being hurt at this point and fought back. The humans found themselves not being fought by the gods at this point, but instead the earth itself. The earth swallowed whatever humans it could at this point. Then the earth hardened itself and soon enough new life bloomed from it. With this the Merged were tasked with creating a new race for the earth. However instead of just one race there were several. All unique in their own way, all fighting for supremacy on earth to become the new humans.
It was a new age for the earth, new races had been created, each of them lead by a different group of gods. Some animals and humans remained though they worshipped the gods in hopes that the same disaster would not happen again.