In Ramayana, a popular Indian literary classic, Indra, a graceful green-skinned god rode on a mountain-sized elephant named Erawan. Erawan, the noblest of elephants was a magical gift from God Shiva to God Indra. Lord Indra also has 2 other magical elephants, Keereemeg Tridayuk and Eggatun, which were given to him by Lord Brahma and Lord Vishnu respectively.

Erawan elephant’s said to be the most powerful of all. Described as a hugh elephant with silvery white body of 33 heads, each head has 7 long ivory tusks. Each of his tusk is 16 million meters long, so huge that it can house 7 large lotus ponds, within each tusk also live thousands of angels and their servants.
 
It’s quite rare to see the full version of Erawan elephant with 33 heads, instead, many artists prefer to draw Erawan as a 3 headed elephant instead.