Grod claims to stem from a very noble and power-hungry family. For many years he played along with all their scheming and plotting and engaged in some rather dubious undertakings. Being blessed with musical talent and an adorable voice (by dwarven standards), he also sang about his families glory and history on frequent occasion to please his elders.
Though one day, Blood Bowl came into his life. He fell in love with the sport and as it was rarely seen nearby his family home, he decided to hit the road. Without his family's approval, he left and headed for the city of Altdorf. On his way, talking to wanderers and other, manifold people, he developed a whole new perspective on his family and their habits. Disgusted by how much it actually had gone astray from what most folks (including others of his kind) think about dwarves, he gave up his family name and called himself "Powerslave" as atonement for his own share in those activities.
As much as he despises his former life, he still loves to sing, and therefor naturally performed songs of dwarves, adventures and Blood Bowl in the taverns along his way. Soon enough he was called a bard, and when he joined the Agility Monsters after a successful game as journeyman, the nickname stuck.

In only his 5th game (round 1 of Lustrian Challenge VIII qualification) he got his collar bone smashed by the remarkable Caspor Hill's heavy boot.

He performed well during his 6th game, despite the injury. Late in the game he got pushed into the crowd, right between some human hooligans. Grateful for his pleasant landing, he started to chant the Sigmar ballad "Hallowed Be Thy Name". Some say he must have gotten it terribly wrong, others state it was just a poor choice... Whatever the case may be, as Apothecary Silverstaff finally found his remains between boots and filth, there was nothing left he could do for Grod. His songs will be missed!