Garuda (West-Facing/Sadyojata): The eagle face represents swift action and provides protection from poisons, negative spells, and removal of toxins. A devta of Kalyug and protection of Shree Vidya. He would help Lord Vishnu to recreate what is lost and create ground of reality.
Varaha (North-Facing/Vamadeva): The boar face grants stability, wealth, prosperity, & the power to conquer obstacles. He goes inside the deep waters to save Bhudevi. Deep waters are emotions & the attached demonic attachments/patterns. So Varaha helps in preservation, healing & the flow of life
Hayagriva (Skyward-Facing/ Ishana): The horse-headed face of supreme knowledge, wisdom, & spiritual enlightenment. The guru of Saraswati- he is the one who narrated Shree Vidya texts to Sage Agastya
Krittibas Ramayana—Hanuman assumed this virat (gigantic) form to defeat the demon Ahiravana in the netherworld. The myth states that the demon could only be destroyed if five specific oil lamps were blown out simultaneously.The multi-directional faces allowed Hanuman to extinguish all five lamps at once, rescuing Rama and Lakshmana..
My observation: Hanumanji is the only god who absorbs energies from cosmos and transmits to his solar plexus directly. Since he already is the son of Adishakti, .Shree Ram is “Brahman”/cosmic energy- Surya comes directly to him. Rest all our dieties , work in combination of shiv and shakti and kundalini awakening. Hanumanji’s transmutation of energies was direct, hence he had so much strength.
This is also a method of energy from cosmos that can be directly transferred to muladhar to give more power to “awakening”, rather than Kundalini awakening that goes from Muladhar to Sahasrar. In Hanumanji’s case it was Sahasrar to Muladhar. I could never consider him as a masculine energy, for me he is shakti- pure form of devotion, purity and innocence that only a feminine energy can have- the selfless, unconditional love for Shree Ram.