Hanuman assumed Panchamukhi or 5-faced type to eliminate Ahiravana, a robust rakshasa black-magician and practitioner on the dark arts throughout the Ramayana war. Ahiravana, brother of Ravana, had taken Lord Rama and Lakshmana to netherworld as captive, and the sole technique to eliminate him was to extinguish five lamps burning https://www.facebook.com/share/1J6iVuTuXb/