Despite her name, Rainbow had a very gloomy and dark personality as a kit. A few months after Rainbow had been born, a pack of dogs had killed her mother, father, and her siblings; leaving her all alone inside a sewage pipe. After seeing her entire family being slaughtered by canines, Rainbow went into a deep state of depression; almost dying of starvation before being found by one of Peace Tribe’s members. When Rainbow was taken in, every cat in the tribe was severely concerned with the she-cat’s well being; having been traumatized for who knows how long. Despite all the herbs the healing cat had given Rainbow, the she-cat continued to think dark thoughts; wanting to be alone at every possible minute. It wasn’t until Rainbow had met Star, Winter, Swift, and Tornado that she felt companionship and feelings of love and compassion for her new friends. After that, Rainbow’s whole life turned around; she dedicated her life to keep them safe; making sure none of her family would ever die the same way again.