Figured I’d drop some info about Milestone here so here ya go:

Born and raised in the planet Paradron, she grew up and formed a bond with a group of pacifists, guarded by the Wreckers as their allies in case of sudden danger. She had an interest in inventing all kinds of wacky gadgets useful for any occasion when needed, but was also keen on exploring vast worlds, wondering what life may exist beyond her home. And unlike most Paradronians, she was one of the few that possessed bravery and the courage to fight back, the sole reason why they depended on the Wreckers to begin with. Eventually though in the 1980s, she wound up on Earth, a planet that served as one of many countless outposts the Autobots established after the Great War. She would be taken in by Optimus Prime to join his team which would give her the opportunity to show her skills, and bring kindness.