Hanuman is a Hindu god and an ardent devotee of Lord Rama. He is a central character in the Indian epic Ramayana and its various versions. A vanara, Hanuman participated in Lord Rama’s war against the demon king Ravana. He is believed to be the son of Vāyu Deva (wind God ) and hence is also called the Pavan putra or the son of wind .
From Brahma he obtained the power of inducing fear in enemies, of destroying fear in friends, to be able to change his form at will and to be able to easily travel wherever he wished. From Shiva he obtained the boons of longevity, scriptural wisdom and ability to cross the ocean. Shiva assured safety of Hanuman with a band that would protect him for life.
(As mentioned in the Wikipedia )