Thrashbarg the Orc, wielder of hammers, crusher of skulls, and too old for this shit. Being a noble Orcish warrior Thrashbarg refuses to simply retire and fade away. As much as he longs for death's sweet embrace to relieve his old battered bones, he cannot betray his warrior's roots. If Thrashbarg is to die, he is to be bested in battle, by the finest swordsmen, mages, archers or beasts around. Unfortunately for Thrashbarg, the years of training, and then exacting that training on more or less anyone who crossed his path, have made him the mightiest warrior in all Cyrodiil.
So old Thrashbarg will venture into Skyrim, there hoping to find a warrior, or beast, strong enough to honourably give him peace at last.
Though I've not really thought about it too hard. :/