Gorgonna

Gorgonna becomes the leader of Conquest Hold in Grizzly Hills with the aid of Horde adventurers.

Heart of War
Gorgonna breaks up an argument between Garrosh Hellscream and her sister Krenna in Orgrimmar that threatened to turn physical. She explained to Garrosh that she believed the orcs must suffer as penance for the actions of the Old Horde.

Gorgonna and Krenna spent their childhoods in the internment camps after the Second War until they were liberated by Thrall.

Their parents fought in the wars and drank the blood of Mannoroth. According to Gorgonna, they committed terrible acts in the name of the Horde, including attacking and murdering the innocent.

Wrath of the Lich King
She attempted to keep the damage caused by her sister Conqueror Krenna's heavy-handedness and lack of judgment to a minimum. For instance, Gorgonna sent the adventurers with a letter to spare Sasha, a captured trapper, from execution. When the troll leatherworker, Hidetrader Jun'ik, attempted to substitute disguised grizzly hides for worg hides (his belief being that there would never be enough worg hide for her troops), Krenna ordered his leg broken and Gorgonna, seeking to make it look real, kicked him in the leg to make it look like she broke it.

Eventually, Krenna discovered Gorgonna's actions and challenged her to a duel to the death, along with the adventurers who aided her.

Before the fight, the women have words:
 * say
 * say
 * say
 * say
 * say
 * say
 * say
 * say

Krenna was killed by Gorgonna and the adventurers in the Pit, and Gorgonna became the new leader of the Hold.

Quests

 * Ruuna the Blind (Horde)
 * Tactical Clemency
 * Gorgonna (quest)
 * The Conquest Pit: Final Showdown

Quotes

 * say
 * whisper
 * say
 * say

Trivia

 * An unused NPC representing Gorgonna is situated in the same ID range as other legendary warriors presumably meant to appear in Skyhold. She and most of these NPCs didn't make it out of the Legion alpha stage.