Origin and Destruction
Nicole was created in an unseen alternate future reality. She was send to Princess Sally Acorn in the past of another alternate future Mobius by Sally's future self to be the friend she would need the most after her mentor Julayla passed away. In this timeline Nicole was a value mentor to Sally Acorn and essential to the Freedom Fighters in the defeat of Dr. Robotnik. However, she was destroyed during the final battle with Robotnik after he had subjugated himself to Roboticization.
After Nicole was destroyed, Rotor spend years striving to reclaim her lost technology. About twenty-five years after the decisive battle with Robotnik, Rotor managed to rebuild an alternate Nicole based on the original one. Now queen, Sally sent this Nicole back in time to provide the guidance her younger self would need after the loss of her mentor, Julayla.