Havoc Demon Hunter
Weapon: Twinblades of the Deceiver
These glaives belong to the former demon hunter Varedis Felsoul. Once a member of the Illidari and a sworn enemy of the Burning Legion, he was slain at the Black Temple. After the Legion's leader, Kil'jaeden, revived him in the Twisting Nether, Varedis surrendered to the demon within him, forsaking his mortality. In the process, he and his glaives were infused with great power by Kil'jaeden's eredar allies.
Vengeance Demon Hunter
Weapon: Aldrachi Warblades
In ages past, the dark titan, Sargeras, offered the mighty aldrachi people a place in his Burning Legion. But the aldrachi proved incorruptible: they slew innumerable demons before their race was wiped out. Sargeras personally killed their greatest champion and seized his weapons. Much later, a demon hunter willingly became the servant of Sargeras' lieutenant Kil'jaeden. Pleased, Kil'jaeden bestowed the warblades on her, that she might wield a portion of the aldrachi's bygone might, and devastate the mortals of Azeroth with it.