Hanuman assumed Panchamukhi or 5-faced variety to destroy Ahiravana, a powerful rakshasa black-magician and practitioner with the dim arts through the Ramayana war. Ahiravana, brother of Ravana, had taken Lord Rama and Lakshmana to netherworld as captive, and the only real approach to destroy him was to extinguish five lamps https://www.instagram.com/tantramantraaurvigyaan/