How the Guardians came to be
"Goddess Selena created the first supernatural being before humans ever walked the earth. Even today, only she knows what all her creations are. Our race however, is no mystery. Seeing the creation of humans, the goddess immediately wanted to mold them into something of her own, thus the first vampire was created. Knowing how the humans fought to find enough food to keep them alive, the goddess chose to make the humans a source for us. Human blood keeps us alive. However, the blood of a supernatural, the goddesses creations, also makes us thrive. She wanted us to flourish with or without the humans, simply because she had no idea if they would survive or not.” He smiled as he looked down at his granddaughter. “The same was true for the werewolves. Her love of nature, the wolf in particular led her to combining a majestic wolf and a human. Once she saw how strong, vibrant, loyal—perfect as she saw it—her creations were, she decided to take twelve from each race and make them her own personal protectors. They would take from her essence, her blood, and become stronger, pure. Thus, the guardians were born."
Arthur Langford telling his granddaughter Mileena the Guardians history.