Hanuman Plays an important role during the Ramayana, notably while in the search for Sita, Rama’s spouse, who was abducted by Ravana. His devotion and bravery in the mission to avoid wasting Sita spotlight his value. As to the just one hand Hanuman represents The best of support, so on https://www.youtube.com/watch?v=ufkmD95y7fE&t=1s