There are two different types of men-the asuras and the suras.
- dvau bhūta-sargau loke 'smin
- daiva āsura eva ca
- viṣṇu-bhaktaḥ smṛto daiva
- āsuras tad-viparyayaḥ
- (Padma Purāṇa)
Those who are devotees of Lord Viṣṇu, Kṛṣṇa, are suras, or devas, whereas those who are opposed to the devotees are called asuras. Devotees are expert in all transactions (yasyāsti bhaktir bhagavaty akiñcanā sarvair guṇais tatra samāsate surāḥ (SB 5.18.12)). Therefore they are called kovida, which means "expert." Asuras, however, although superficially showing expertise in passionate activities, are actually all fools. They are neither sober nor expert. Whatever they do is imperfect. Moghāśā mogha-karmāṇaḥ. According to this description of the asuras given in Bhagavad-gītā (BG 9.12), whatever they do will ultimately be baffled. It was such persons who advised Kaṁsa because they were his chief friends and ministers.