Ive seen your stories about how giratina was formed in the forum the origin giratina. I think all your stories are good. Here is my story.
First arceus created dialga and palkia. they created time and space. Then, as it says in the diamond pokedex arceus shaped the universe. Then arceus created the legendaries. all the legendaries were assigned to something. Deoxis was assigned to protect outer space. Groudon was to protect ground. Manaphy, phione, lugia, and keogore were made to protect water. Then mew created all pokemon that werent legendaries. Arceus created humans. The pixies taught humans willpower, memory, and emotions. Then nobody died. The world got crowded. Arceus made giratina. People started dieing. Then the world did not get crowded. Now that people could die they started dropping like flies. There was no darkness, so people could not sleep. Without sleep you would die. Then arceus made darkrai. There was darkness. People slept. But death and darkness are evil. So giratina and darkrai rebelled against arceus. They made arceus fall into a sleep that would only be broken by the azure flute. Then shaymin and dialga trapped giratina in turn back cave. They hit him so hard that it messed up his form. Palkia and Cressilia put darkrai in the cave of Newmoon Island. Darkrai couldnt get out but giratina was able to get to the distortion world. In that world he was able to return to his origin state. If he went back to our world without holding a platinum orb, he would revert back to his altered form.
That is my story. Hope you like it!
John 3:16
For God so loved the world that He gave his only begotten son and whosoever believeth in Him shall not perish, but have eternal life.
May the LORD bless you today!