Kidou Butouden G Gundam

Instead of engaging in a war between the colonies and Earth, a combat tournament is organized. Known as the Gundam Fight, this event takes place every four years under the auspices of the United Colonies Federation. Each participating nation sends a representative to pilot a Gundam. These Gundams battle on Earth until only one remains victorious. The winning Gundam's nation earns sovereign rights over all others until another nation claims victory in the subsequent Gundam Fight. This series unfolds in Future Century 60, during the 13th Gundam Fight. It centers on Neo Japan's Gundam Fighter, Domon Kasshu, who aims not only to win but also to pursue his personal mission: tracking down his brother who has stolen a mysterious Gundam, the Devil Gundam, from the Neo-Japan government. (Source: Wikipedia)