Hanuman assumed Panchamukhi or 5-faced type to eliminate Ahiravana, a strong rakshasa black-magician and practitioner with the darkish arts during the Ramayana war. Ahiravana, brother of Ravana, had taken Lord Rama and Lakshmana to netherworld as captive, and the sole approach to eliminate him was to extinguish 5 lamps burning https://www.youtube.com/@Mahavidyabaglamukhi