I am in a writing mood now, which is surprising because I don't normally write. Here you go, Pokémon creation stories
Before there was anything, there was nothing. No light, no life, no time, nothing. But then, a being came into existence. A being of pure energy. It was everything. Such a being was dubbed Sinnoh. But that was too much for one being. Sinnoh grew bored, and gained desires. Desires of light, of a world, of company. So Sinnoh split into two other beings- a being of space and a being of time. First was The Being of Space, later named Palkia, which created the land and the world around Sinnoh. Yet everything was still, everything was cold. So Sinnoh split into The Being of Time, later named Dialga, who created movement. It allowed the passage of time, which let life grow and let the sun and the moon in the skies above rise and fall. The creation of these beings left behind a void within the Almighty Sinnoh. So Sinnoh split itself one last time, shrinking Sinnoh's physical form as it removed the void from itself. The main body of Sinnoh, unable to hold its original title, was named Arceus. The void, unwilling to die, became the physical form of antimatter. This being, later called Giratina, was a menace. Giratina was unable to create. It could only destroy, for any matter it created sucked in and destroyed whatever it touched. So the beings of Creation, Space, and Time came together to build a realm for Giratina. They sought no malice, simply wishing to give Giratina a home where it would never hurt the realm created by Sinnoh.
The land that was created was not enough. Palkia created a Pokemon to spread water, as the rain in the sky wasn't enough. This being, Kyogre, created storms. Storms that raged for years, flooding the land Sinnoh created. This was too much, and so Dialga created a being of flame and earth, one that harnessed the power of heat and ground. This being, named Groudon, gave rise to molten stone that cooled into landmasses that developed life. Kyogre, who noticed his domain was shrinking, did not like this. Yet they never crossed each other, so things remained calm for the time being. The steam that rose from the conflict between lava and sea created the sky above. This sky needed a guardian, for the space beyond the sky contained energy that leaked in from Giratina's realm. And so Rayquaza was born to watch the skies and Space beyond.
Almighty Sinnoh, now three beings, was still bored. They created life, giving form to a handful of Pokemon. Of these beings, one of the first was the one known as Mew. These beings were still boring. They had no minds, no personality. They were creatures that only acted on instinct for survival. Dialga and Palkia came together and gave form to special beings. First, knowledge was created, giving form to Uxie. Pokemon were given the power to learn and to remember by Uxie, and Uxie held the power to remove the ability at a whim. Despite being given the power to learn, no Pokemon wanted to learn any more than needed. There was no drive to grow or work together. So it was created. Azelf, the being of Willpower, was born, and it gave pokemon the drive to learn, to grow, to strive. Pokemon began learning more about the world around them rather than only what they needed to survive. Some Pokemon learned of evolution, and how to attain it. They became ruthless, attacking and killing without a worry of those around them- the strongest survive and grow, the weak died. This was not ideal, so Dialga and Palkia came together to form one more being. The being of Emotion, Mespirit, was created. It gave Pokemon heart. They developed emotion, no longer simply trying to provide for themselves but trying to help each other and create communities. This is some species of Pokemon lost their magic and elemental traits to become what we know as humans.
There was too much land for the Sinnoh beings to watch over all at once, and so a guardian for the world was given form. This being, known as Regigigas, was sent down to protect the world. Regigigas, new and scared, wanted a safe haven for itself, so it dug a large trench along the coast of the new continent, tied a rope around the mass, and dragged it out to sea, creating a second continent for itself. It did its job as best it could, yet it still wished to have a space of its own. Land and life were ever-expanding, and so help was needed. Regigigas, alone, wanted help, or company. It gathered clay from its continent and began shaping four beings. First, the being of stone. The second was a being of ice that was forever cold. Third and fourth were beings of molten lava, which cooled and hardened to beings of metal. The fourth being was struck by lightning during the time it solidified, so by the time it became a solid form it trapped all the energy of the lighting within itself. There was still clay left over from the birth of these titans, so a fifth was started. Yet Regigigas didn't have enough to form any more than its head. Regigigas gave this being draconic energy, as this titan was modeled after the guardian of the sky, though it was only visible to Regigigas once.