One of the founders of League Militaire, Hangerg was one of the first to take action in response to BESPA's tyrrany towards Earth at the onset of the Zanscare War. He had to hide his identity to be able to act secretly with the rise of Zanscare and had done the necessary to receive the support of the Earth Federation Forces when the treaty was violated by the Zanscare Empire.
Üso found him in space when the League Militaire and the Earth Federation fought together to destroy Angel Halo. Nevertheless, Üso found that his father is very different from his memories and consider him a stranger. In the final battle, he vanishes, leaving his status unclear.