As we know fromGame of Thrones, each sword comes with its own lineage and mythology.
Martins mythology, Dark Sister is one of the two key ancestral swords that belong to House Targaryen.
The other weapon, Blackfyre, is in the possession of Viserys I.
Image via HBO
That also lended it to be used better by the average female warrior.
The hilt itself is designed to look like the wings of a dragon.
After his conquest, Aegon I gifted Dark Sister to his older sister and wife, Queen Visenya Targaryen.
Image via HBO
Due to the tradition at the time, the siblings were wed to get to keep their bloodline pure.
While she was heralded for her nobility, Visenya was as fearsome a warrior as her brother.
She personally used Dark Sister to execute a band of Dornish assassins that invaded Kings Landing.
Image via HBO
She also fought alongside her brother in the subsequent war against Dorne.
Aegon was impressed by her point and named her the first commander of the Kingsguard.
Visenyas ferocity with Dark Sister is actually brought up in the second season ofGame of Thrones.
Tywin is surprised that a poor servant has a greater depth of knowledge than his grandchildren.
Arya mentions that during the burning of Harrenhal, Visenya wielded Dark Sister in combat.
He briefly gifted the weapon to his son, Baelon the Brave.
Baleon used it to track down the Myrish swordsmen that had murdered his brother, Prince Aemon.
House of the Dragonhas the potential to answer some questions that were left open-ended inGame of Thrones.
The swords inHouse of the DragonandGame of Thronesemphasize character attributes.
