Lord Venkatachalapahy is also called Nilameghashyamalan - possessing a complexion the colour of the dark clouds. As proof that opposites attract, Lord Venkatachalapahy's outer appearance is dark while he is associated with the santha gunam, bringing light & peace to the world.
He rests on the ocean on his bed of Adisesha (serpent with 1,000 heads). Any time Lord Vishnu sees great trouble, He takes an avataram to rescue the people from evils. He is all merciful, ever rushing to serve his devotees.
In the form of Mahavishnu he has four arms wielding the chakra, conch, lotus & the gadha or mace in his four arms. Some of the main avatarams of Vishnu are enumerated as the Dasavataram (10 Incarnations).
