Fanfic:Sunshadow
 
“After thousands of years of sleep, the golem had laid dormant for so long it had forgotten its creator, its purpose, all its memory. But it awoke when showered with a special magic, and it looked to the sky to see something wonderful. A rainbow! And the construct was filled with what it would come to know as joy. It knew that whatever had come before, it certainly wasn’t living, and it felt compelled to share this wondrous feeling with everyone.
 
“At some point she started calling herself Pinkie Pie and earned a cutie mark signifying her knack for parties, and her pilgrimage across Equestria eventually came to a close in Ponyville, where she learned the fine art of baking from the Cakes. She has claimed the town as her home, and every day she sets out to make it the happiest village in Equestria.”