Hagen Schwarzschild, great grandson of Zoey Schwarzschild (Khaos Freya) and Izaak Reissner (Kou Vidar).

He is forced to take his unit against the Phantom Ulfheðnar, where he will eventually become the Avatar of Freyr, much like Zack had been before centuries back, an action that changes his personality radically, exhibiting much of the personality traits and quirks the previous Freyr (Zack) had before, even acquiring a heart pendant and a red leather collar just like the old Freyr used to.

Just like the previous Freyr, he becomes the master of the Herzeleid - and is equally as powerful as his predecessor.

He inherits the slanted eyes and birthmark of his great grandfather Izaak (Vidar) and a variation of his great grandmother's iconic hair color (his being blonde and black rather than brown).