Inara

Inara was a succubus and the mother of Rose.

History
Allegedly, Inara had plans to give birth to an army of cambions to take over the Sword Coast. She is only known to have given birth to two children: Rose and another unnamed Cambion, who is currently somewhere in Faerun, causing chaos.

Part of her plan involved the prolonged imprisonment of Tyrion Grovewood, using him to repeatedly impregnate herself. She also continuously abused him mentally and emotionally, taunting him with the lives of his children.

Death
Inara was slain in the Ethereal Realm by her daughter, Rose. She had taken Rose there in an effort to seclude her from the rest of her party. Despite this, Rose alone was strong enough to defeat her mother.