It is said in Age Old Legends that the Universe, was created by a singular being. In the infinite void of time and space, Arceus, the first Pokemon came into existence. Roaming the infinite expanse of the ever-expanding universe, Arceus created Dialga, Palkia, and Giratina, each with the power of Time, Space, and Gravity respectively. When the 3 came into existence, Time, Space, and Gravity were born. They were the first steps into creating the worlds, the galaxies.
Dialga, Palkia, and Giratina willed and spreads their powers through the infinite expanse of the void. The 3 powers worked together in harmony into creating the worlds. Gravity forged the stars and Space held them in. Gravity connects star system together in vast galaxies and steers them on their journey through unbounded Space.
The relentless flow of Time had driven the evolution of the Universe and created extraordinary wonders. As the Universe evolves, it passes through distinct eras. Vast ages with beginnings and endings are marked by unique milestones. The births and deaths of its wonders.
Gravity is the great creator, the constructor of worlds. But Gravity is also the destroyer because of its relentlessness. When a star collapses, all the matter in its core is crushed into an infinite void of blackness known as a "Stellar Mass Black Hole".
The immense Gravitational pull of these monsters can rip stars apart. They tear matter from its surface and drag it into orbit. This super-heated matter spins around the mouth of the black hole and great jets of radiation fires from the core.
Throughout a star's life, there is a constant battle between energy pushing out and Gravity pushing in. When a star runs out of fuel, the star collapses and then explodes with the brightness of a billion suns.
As the star is torn apart, it will fire out into space all of the elements that it created in its life... and death. These are new stars, forming from the elements blown out from these explosions. New stars being born from the remains of the dead ones. And it's from this Universe's process of death and rebirth that we emerged because it was in a nebula just like this, that was how our sun was formed.
It was from this display of total annihilation throughout the infinite expanse of the void that Arceus banished Giratina into another dimension, the Nether World. A world where Rules and Laws are fictitious and the unbounded imagination run wild. It is in here that Giratina was able to more control its power of Gravity.
Around it, our sun, a network of planets formed. Among them was the Earth. Along with the birth of Earth came the creation of Rayquaza, who roamed the outer layer, a protector from the outer forces of the void. Debris, leftovers from the formation of the solar system collides with Earth creates the Moon.
From this molten hell of Earth, Primal Groudon was created. After long years of Earth cooling down, and the influence of Primal Groudon, the early continents came into form. The land was dominated by volcanos, hostile and lifeless. However, from these volcanos came water, came the birth of Primal Kyogre. Along with Kyogre's creation, oceans came into being.
Life has begun.
However, there soon came a problem. As Primal Groudon and Primal Kyogre met, they became rivals and fought for dominance over the world. With the endless clash of devastation, Rayquaza was awoken from its deep slumber and quells the battle causing Primal Groudon and Primal Kyogre to retreat deep within Earth to recuperate.
To prevent the reawakening of Primal Groudon and Primal Kyogre, Arceus sealed their power in a Red Orb and a Blue Orb respectively.
After the formation of the world was laid, Azelf, Uxie, and Mespirit came into being with the gift of willpower, knowledge, and emotion respectively. Spreading their powers through the land, they dove into the great 3 lakes surrounding the Sinnoh Region dubbing them the Lake Guardians. While all of this was going on, Mew also appeared in the world, containing the DNA of every Pokemon. (E: Even Arceus?! Is Mew the Singular Being?!) (A: Sure.)
----(Alright, that was the creation of the world. There are still a lot, and I mean a lot of things missing because I'm too lazy to explain anymore, so I'll let you guys come up with them.)----