Hanuman Is usually a central and beloved figure in Hindu mythology, renowned for his unwavering devotion to Lord Rama and his superhuman feats as depicted in ancient texts, specially the Ramayana. It's well known that Tulsidas would recite the Hanuman Bahuka to cure himself of his really serious arm ailment; https://www.youtube.com/watch?v=ufkmD95y7fE&t=1s