What god--ordinarily shown with the face of a monkey--helped return Sita after her abduction to Sri Lanka?

The god who helped return Sita after her abduction to Sri Lanka was Hanuman, who is ordinarily shown with the face of a monkey. He is a central character in the Hindu epic Ramayana, where he plays a pivotal role in assisting Lord Rama in his mission to rescue his wife Sita from the clutches of the demon king Ravana.