Angad, the son of Bali
Angad, according to the Ramayan, was son of Bali by his wife Tara.When Bali was dieing, he asked Sugriv to take care of Angad after his death.
Angad thus came under care of Sugriv, who on the instruction of Ram, made him crown-prince of Kishkindha.
It was under the leadership of Angad, a team comprised of Hanuman and others were sent to the southern direction in search of Sita.
When they reached at the shore of the ocean, Angad offered to cross it to go to Lanka on the intelligence given to them by Sampati. However, Jambvan counseled against it and then Hanuman was sent to Lanka.
Hanuman went to Lanka and came with the information that Sita was kept there in a pitiable condition. Angad immediately wanted to go to Lanka and destroy the whole country and rescue Sita. However, Jambvan advised him not to do so on account of the vow taken by Ram, saying that the destruction of Ravan was to be carried out by Ram himself.
The search team then returned to inform Ram and Sugriv about their success of finding out the whereabouts of Sita.
Ram and Sugriv along with their army of monkey, boars etc, then came to the shore and crossed the ocean, and reached Lanka.
Just before the war, Ram decided to give Ravan a last chance for making peace. He sent Angad as his messenger. He went to Lanka and advised Ravan to make peace with Ram and return Sita to him. However, he was humiliated. He had to fight with Rakshasas in which many were killed and the whole of Lanka had to suffer a great destruction.
After the Ram-Ravan battle, they returned to Kishkindha where Sugriv, his uncle ruled for many years. When Sugriv died, Angad became king of Kishkindha.
Angad, the son of Lakshman
According to the Ramayan, there was also another Angad, who was a son of Lakshman by his wife Urmila.Ram, the king of Ayodhya made his king of Karupath.