Narasimha Dev is the manifest man-lion incarnation of Vishnu, who incarnates to destroy evil and end religious persecution and calamity upon the earth, thereby reestablishing the divine balance of the great dharma of the eternal Vedic tradition.
The Supreme appeared in this form to protect Prahlada from his demoniac father Hiranyakashipu. He always protects His devotees from all dangers. Devotees need not be afraid of His ferocious mouth and tongue, eyes as bright as the sun, sharp, pinching teeth or His tumultuous roaring. His nails which are like chisels are meant for ripping apart enemies. But for the devotees, His beautiful hands, which are like lotus flowers, give shelter and protection.
Narasimha is known as the divine protector because he removes all obstacles that can hamper a devotee's spiritual progress. People unfamiliar with Vedic characters foolishly conclude such characters are imaginary and mere creations of the human mind. "It's all blind faith and superstitious," they argue and reject such ideas as false. But the universe is unlimited, and we have no idea of what kind of varied beings exist outside our planet earth.