Hanuman was one of these 4 monkeys. This monkey team was instrumental in giving Rama important information regarding Sita. They served him create a bridge across the seas, and cross around with a monkey Military that successfully stormed the demon stronghold and freed Sita. भस्मसादभवदैत्यो दुष्टचेष्टितमन्तकृत् ॥ २३ ॥ मुकुन्दोऽपि https://tantramantraaurvigyaan.com/