Harpe Noir grew up together with Ronan as a closest friend. Unlike Ronan, he couldn't use magic but trained his sword skill long enough to be with Ronan. With his sword skill, he could be one of the members of Existor, which is an informant organization of Erudon family. As guard of Ronan, he took credit for war and was honored.
In the battle with Astarot, Harpe sacrificed his life to protect Ronan and to get back Harpe's soul, Grand Chase members ride on Abyss Train 301.