The main protagonist of the series. 

A former Unity soldier who wants to escape the world he knows as it falls into war. Despite being skeptical and distrustful of others due to being betrayed by his closest friends, he is pretty open around others and is willing to offer help in any way he can. He also tends to act without thinking which can lead to some unintended consequences. Above all else though, Robin wants nothing more than to protect and be with those he cares about.