Atikaya

Atikaya was a mighty warrior, the son of Ravana and his second wife Dhanyamalini. He was so skilled and powerful that he could only be slain by Lakshmana using a Brahmastra, a powerful weapon of the god Brahma. The wind-god Vayu revealed to Lakshmana the secret that Atikaya's armor was invincible, except to a Brahmastra. Atikaya and his uncle Kumbhakarna were believed to be incarnations of the demons Madhu and Kaitabha, who were tricked and killed by Vishnu at the creation of the world.