Rain Mikamura is a central character in the anime series Kidou Butouden G Gundam. She is a skilled mechanic and the childhood friend of the protagonist, Domon Kasshu. Rain plays a crucial role as Domon's support system, both emotionally and technically, throughout his battles in the Gundam Fight. Her intelligence and expertise are invaluable, as she often repairs and upgrades the Shining Gundam, ensuring Domon can compete at his best. Rain's loyalty and dedication to Domon are evident, and her presence adds depth and emotional complexity to the series.