A young man whose father Bright fought alongside Amuro in the One Year War. As a boy, he survived the second Neo Zeon War (Char's Rebellion) launched by Char Aznable, and is now training on Earth as a botanical observer. However, Hathaway is actually Mafty Navue Erin, the leader of the anti-Earth Federation organization Mafty.

He is preparing to attack a conference of high-ranking Federation officials in Adelaide, and will pilot the XI Gundam—a state-of-the-art mobile suit at the very heart of the operation.

A mysterious young woman he meets on the shuttle Haunzen, Gigi Andalusia, and an EFF colonel commanding the Circe Unit, Kenneth Sleg, will become deeply entangled in Hathaway's destiny. Will Gigi be the light that guides him...?