Manthara
Manthara was a hunchbacked woman who served as a trusted advisor to Queen Kaikeyi. She was the one who convinced Kaikeyi that her son Bharata should be the next king of Ayodhya, and that Rama, Kaikeyi's stepson and the rightful heir to the throne, should be exiled.
Manthara was a cunning and manipulative woman who used her position of power to get what she wanted. She was also very intelligent and knew how to play people's emotions to her advantage. She was a major antagonist in the Ramayana, and her actions had a profound impact on the story.