Hanuman was just one of those 4 monkeys. This monkey team was instrumental in giving Rama important information about Sita. They assisted him produce a bridge across the seas, and cross more than using a monkey army that successfully stormed the demon stronghold and freed Sita. भस्मसादभवदैत्यो दुष्टचेष्टितमन्तकृत् ॥ २३ https://zanderqngzt.fitnell.com/78504220/about-yantra