Shiva, "The Destroyer of The Universe" ,so that life could be regenerated - Shiva also known as Mahadeva ("Great God"). He is a destroyer and he is the reproductive power that continuously restores what has been destroyed. Shiva is the most popular God among Hindus. Main thing to know about him is that as his name Shiva—The destroyer of the universe, he only destroys the bad things or the evil inside the Humans. He does not destroy the good ones. He destroys the bad things or the evil to recreate or to generate new life.
Shiva has many benevolent and fearsome forms. At the highest level Shiva is limitless, transcendent, unchanging and formless. In benevolent aspects, he is depicted as an omniscient Yogi ( meditationer) who lives an ascetic life on Mount Kailash, in the Himalayas.
The main iconographical attributes of Shiva are the third eye on his forehead, a snake around his neck, the crescent moon adorning, the holy river Ganga ( Ganges) flowing from his matted hair, the Trishula ( trident) as his weapon and the Damaru as his instrument. Shiva is also regarded as the patron god of yoga and arts. The dancing form of Lord Shiva is known as NATRAJAA ( The King of the Dancers).
Goddess Parbati also known as Shakti incarnated as Durga , Kaali etc. is the consort of Lord Shiva and Ganesha (God with the elephant head ) and Kartikeya are their two children.
Lord Shiva being represented by a 'Shiv Linga' It is a representation of Lord Shiva, used for worship in Hindu temples. In traditional Indian society, the Shiv Lingam( Phallus) is rather seen as a symbol of the energy and potentiality of the God. The popular belief is that the Shiva Linga or Lingam represents the phallus, the emblem of the generative power in nature.
The lingam is often represented alongside the yoni ("vagina"), represents the female energy of Shakti ( divine feminine creative power ). The union of Shiva lingam and yoni (Vagina) represents the "indivisible two-in-oneness of male and female, the passive space and active time from which all life originates". It also signifies the male and female powers of nature. Linga also signifies 'Satya,' 'Jnana' and 'Ananta', meaning Truth, knowledge and Infinity.