Many people once believed in legendary creatures and animals. The animals and legendary creatures may have control or has power over a part of human or natural life. For example, the Greek god Zeus had powers over lightning and storms. Whenever Zeus wanted to, he could make a storm, and he made storms to show his anger. Similarly, in Hindu mythology, thunderstorms were said to be the wrath of Indra, the chief of all gods. His most powerful weapon was the "Vajra", or 'thunderbolt'. It was said that no one could survive after an attack from this weapon. Another example is the Egyptian god, Atum, who was said to be the creator of everything in the world.