Shiva :

Shiva , the universal God as Destroyer or( Recreator,) or Controller of Death in  Universe  is the Third  Lord of the  omnipotent trinity(Trimurti) of Hindu gods .
According to ancient period or Puranic period  The Shiva is the one of self created deity in the trinity ( Brahma, Vishnu, Mahesh,). Shiva is a yogi who has notice of everything what happens in the world and is the main aspect of life. Yet one with great power, he lives a life of a sage at Mount Kailash in Himalaya.In the shaiva tradition of Hinduism, Shiva is the Supreme God and has five important works: creator, preserver, destroyer, concealer, and revealer. The shiva is the father of lord Ganesh and lord kartikeya.  His consort is parvati, goddess of Shakti, courage, and bravery .
He is a benefic deity . Shiva was a wanderer, meditating in the cold heights of the Himalayas and at times descending on earth . His meditative prowess is immense, resulting in physical strength and enpowering him with miraculous powers as a fertility god .Shiva is worshipped in the form of a linga and yoni , both organs of pleasure and procreation . This symbolises the link between the worlds, where life manifests itself and the where the spirit becomes incarnate . Shiva ‘ vehicle is Nandi the bull, who epitomises the pervasion of intuition over the rational mind .
Thus Shiva manifested himself as the destroyer and that is the attribute always attached to him . Since all matter must decay, Shiva was not only the destroyer, but assumed the form of a recreator, manifesting all forms of creation again . Death is thus a transforming channel leading to a new life . He is also considered to be Rudra , the Vedic god of storms, winds and death . He is the personification of the unrestrained power causing disaster and disarray .
Though Shiva is Rudra , the fearsome, there is a compassionate side to him also . He is gracious enough to acknowledge his impulsive acts . He is benevolent and freely bestows boons . He is the lord of sleep and so a remover of pain, since sleep dilutes pain .
He is usually depicted sitting in meditation, his locks matted on top of his head with a crescent moon decorating it . His famous third eye adorns the center of his forehead, a serpent is coiled around his neck and his weapon is a trident(Trishool) . He is a fair man, his body covered with ashes and the perfect image of a sage in pensive concentration . His eyes represent the sun, the moon and fire and his vision transcends time . The third inward looking eye can destroys everything when it is turned outwards or open . Each yuga or period comes to an end when Shiva opens his third eye . This same eye also saves the world when required . His ornaments are snakes and skulls . The snakes stand for death and skull for the passing of time . His trident or Trishul represents the Satwa, Rajas and Tamas aspects of nature, symbolizing his role as Creator, Preserver and Destroyer . It emits lightning as Shiva , the god of storms punishes wrong doers with his zeal for righteousness . His bow Pinaka made of a serpent with seven heads helps the gods in  time of need . His tiger skin robe gives him the image of power and his drum makes him Nataraja , the god of dance . He dances out of sheer joy in anger or sorrow . This is called his Tandava dance . The Dwadash or twelve Jyotirlinga in India and one is in Nepal which names are 1. Kashi vishwanath 2. Mahakaleshwar 3. Omkareshwar 4. Somnath 5. Nageshwar 6. Triyambkeshwar 7. Grishneshwar or Ghushmeshwar 8 Bhimashankar 9. Mallikarjuna 10. Rameshwaram 11. Vaidhnath 12. Kedarnath + pashupatinath .The shiva is known as many names like Mahesh, Rudra, Mahakaaleshwar, Shankar, Shambhu, etc