Hanuman assumed Panchamukhi or 5-faced form to eliminate Ahiravana, a strong rakshasa black-magician and practitioner from the dark arts throughout the Ramayana war. Ahiravana, brother of Ravana, experienced taken Lord Rama and Lakshmana to netherworld as captive, and the only real solution to destroy him was to extinguish five lamps https://www.facebook.com/share/1J6iVuTuXb/