His other names are Agnilochana (अग्निलोचन) - the one who has fiery eyes, Bhairavadambara (भैरवडम्बर) - the one who causes terror by roaring, Karala (कराल) - the one who has a wide mouth and projecting teeth, Hiranyakashipudvamsa (हिरण्यकशिपुध्वंस) - the one who killed Hiranyakashipu, Nakhastra (नखास्त्र) - the one for whom nails are his weapons, Sinhavadana (सिंहवदन) - the whose face is of lion and Mrigendra (मृगेन्द्र) - king of animals or lion.
He comes upon Hiraṇyakaśipu at twilight (when it is neither day nor night) on the threshold of a courtyard (neither indoors nor out), and puts the demon on his thighs (neither earth nor space).Using his sharp fingernails (neither animate nor inanimate) as weapons, he disembowels and kills the demon king.After Namuci is killed, the gods get all the powers back, but discover that Namuci had drunk the Soma already.The good was thus now mixed with his badness of his blood, which they did not want to drink. Thus, good returns to the Devas, the bad is discarded.When asked, Prahlāda refuses to acknowledge his father as the supreme lord of the universe and claims that Viṣṇu is all-pervading and omnipresent.
Hiraṇyakaśipu points to a nearby pillar and asks if 'his Viṣṇu' is in it and says to his son Prahlāda, "O most unfortunate Prahlāda, you have always described a supreme being other than me, a supreme being who is above everything, who is the controller of everyone, and who is all-pervading. If He is everywhere, then why is He not present before me in this pillar?
Bhagavata Purāṇa describes that Vishnu, in his previous avatar as Varāha, killed the evil asura Hiraṇayakṣa.
The elder brother of Hirṇayakṣa, demon king Hiraṇyakaśipu, hated Vishnu and wanted revenge.
They reply they will deal with Namuci, get it all back, if Indra agrees to share his powers, the essence of food and the Soma drink with them. The gods and the goddess then come up with a creative plan.
They pour out "foam of water" as a thunderbolt, which is neither dry nor moist, and the evil Asura Namuci is attacked and killed when it is neither day nor night.
The demon is powerful brother of evil Hiranyaksha who had been previously killed by Vishnu, who hated Vishnu for killing his brother.