Varchas

Varchas is the son of Chandra, the moon god, and Rohini, a daughter of Daksha and the chief consort of Chandra. Arjuna's son, Abhimanyu, was his incarnation.
Story.
Varchas was the son of Chandra. He was told to be born on the earth as a mortal. His father agreed the proposal only on one condition. The condition was that Varchas would not leave him for more than 16 years. During the Dvapara Yuga, he took an avatar named Abhimanyu. Abhimanyu was the son of Kuru prince, Arjuna, and Yadava princess, Subhadra.