The following characters, lore and events in this section are non-canon in Dragon Age and exist only within the Dragon Age tabletop RPG.
In the Dragon Age (tabletop RPG), Dead Thaig Shanker is available as a "permanent magic item" reward for player characters. The dagger is one of the most powerful weapons available in the game.
“This long silverite dagger was recovered from the Deep Roads, where it was found in a trove of ancient dwarven artifacts. It is rumored the darkspawn let it be out of fear for a weapon which claimed so many of their own during the fall of the thaigs.”