Niwa the Hedgehog

Niwa the Hedgehog was born 8 years before her brother Axel. She was sent away to Spagonia by her parents to keep her safe from Robotnik, because of this he had no idea she exists until her first appearance in Axel's Distruction of The Wind story line, where she meets him on South Island in Star Light Zone. She is delighted to see him for the first time while axel is just confused out of his mind.