Khar, son of Raavarn's mother's sister, was an expert strategist and warrior. By the order from Raavarn, he saw to it that the terror remains over the kingdoms, if any rituals viz. the yagyas were carried in order to strengthen the devas, he straight away sent the demons to demolish those. He had a well-spread spy network through-out the kingdoms from where he used to get all the information required. The sages who used to penance in the area of Dandkaranya or near by, were slaughtered by him, each one that looked like a possible threat to Raavarn's empire.
- Khar came into highlight during Shri Ram's stay in Chitrakoot. The sages from Dandkaranya, who had a temporary stay there, informed him about the demon's terror, his mass killing of the sages resulting to which they were forced to change their places in regular intervals.
- During his exile when Shri Ram reached Dandkaranya, the sages living there informed him their similar plight as he heard from the sages in Chitrakoot. Khar not just killed those innocent sages, but he broke their souls, their morale by never ending excruciating that illustrated his heinousness.
- We all know about the incident where sage Vishwamitra came to king Dashrath. He asked the king to entrust Shri Ram to him in order to protect his yagya. Vishwamitra was aware of the divinity of Shri Ram and the menace of Khar as well, as it was that demon on who's directions, Mareech used to demolish his yagya. The sage knew only Shri Ram can eliminate the rakshasas starting from Mareech to Khar and then Raavarn as he was aware about the prophecy.
- The demon-knight used to keep a closer check on Shri Ram's activities through his spies the day when Shri Ram saved Vishwamitra's yagya and annihilated the demons. He became care free in between when the news of Shri Ram's coronation spread. But when he heard news of Shri Ram's exile, he became alert instantly and started playing mind games by killing the sages in order to scare as well as demotivate him.
"Hey Nishachar! You came here with all the show off you could, now look at your plight, you were always inspired from ‘kaam’ and ‘krodh’, persecuting the beings of the three worlds. Such a person or being never attains peace and success in his or her whole life"