Sugriva was the son of Surya and King of the monkeys. When Rama was wandering in the forest in search of Sita, he met a giant named Kabandha who, in grateful return for liberation, told him of Sugriva and advised him to form an alliance with the king of the monkeys, who was then living in exile.
In the Battle of Lanka, Sugriva performed feats of valour comparable to those of Hanuman.