Sumali is the grandfather of Ravana the principal antagonist of the Hindu epic, Ramayana .
He, his elder brother Malyavan and younger brother Mali were the sons of the daitya Sukesh. Sumali along with his two brothers made a tapasya to Brahma and asked that their brotherly love would be unbreakable and no one would be able to defeat them. Consequently they conquered every god and daitya.With these powers they asked Vishvakarma to make a city for them. Thus they got Lanka were they lived in luxury. He had ten sons named Prahastra, Akampana, Vikata, Kalikamuka, Dumraksha, Dandha, Suparshva, Sanhadi and Barkarna. Later they were defeated by the gods and Mali was killed by Vishnu. His daughter, Kaikasi was married to sage Vishravas and their son Ravana reconqured Lanka.
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