Io Fleming is a fictional character from Kidou Senshi Gundam Thunderbolt, an alternate U.C. Gundam series set during the One Year War. He is a highly skilled Earth Federation pilot assigned to the Moore Brotherhood, where he serves as the main protagonist. Io is impulsive, confident, and intensely competitive, with a strong love of music, especially jazz. His role in the series centers on his rivalry with Zeon ace Daryl Lorenz, as both pilot advanced mobile suits in a brutal war of attrition.