Lord Shiva

The main divine energy of the Hindu trinity, Lord Shiva is the third aspect of the triumvirate representing 'destruction'. This destruction, however, doesn't stand for the total annihilation of the universe as we may expect it to signify. In Hinduism, destruction is merely an act that paves way for the formation of a new creation. Only when Lord Shiva clears the slate, can Brahma star creating again and Lord Vishnu can start preserving. He is the Father of the Universe.

Here's and excerpt from www.indiantemples.com giving you a quick explanation of Lord Shiva.

"Shiva is referred to as 'the good one' or the 'auspicious one'. Shiva - Rudra is considered to be the destroyer of evil and sorrow. Shiva - Shankara is the doer of good. Shiva is 'tri netra' or three eyed, and is 'neela kantha' - blue necked (having consumed poison to save the world from destruction. Shiva - Nataraja is the Divine Cosmic Dancer. Shiva - Ardhanareeswara is both man and woman.

He is both static and dynamic and is both creator and destroyer. He is the oldest and the youngest, he is the eternal youth as well as the infant. He is the source of fertility in all living beings. He has gentle as well as fierce forms. Shiva is the greatest of renouncers as well as the ideal lover. He destroys evil and protects good. He bestows prosperity on worshipers although he is austere. He is omnipresent and resides in everyone as pure consciousness.

Shiva is inseparable from Shakti - Parvati the daughter of Himavaan - Haimavati. There is no Shiva without Shakti and no Shakti without Shiva, the two are one - or the absolute state of being - consciousness and bliss.

The five mantras that constitute Shiva's body are Sadyojaata, Vaamadeva, Aghora, Tatpurusha and Eesaana. Eesaana is Shiva not visible to the human eye, Sadyojaata is Shiva realized in his basic reality (as in the element earth, in the sense of smell, in the power of procreation and in the mind). The Vishnudharmottara Purana of the 6th century CE assigns a face and an element to each of the above mantras. (Sadyojaata - earth, Vaamadeva - water, Aghora - fire, Tatpurusha - air and Eesaana - space).

The names of the deified faces with their elements are Mahadeva (earth), Bhairava (fire), Nandi (air), Uma (water) and Sadasiva (space). Panchamukha lingams have been seen from the 2nd century onwards. The Trimurthi Sadasiva image of Shiva in the Elephanta Caves near Mumbai is a portrayal in stone, of the five faces of Shiva. The fourth and the fifth heads are not seen in this image here.

The works of sages Vyasa, Vasishta, Patanjali, the poet Kalidasa, the tamil saint poets Nayanmars - Appar, Sundarar, Sambandar, the poet Manikkavachakar, the mystic tamil siddhas, tantric philosophers, the spiritual leader Adi Sankaracharya and others such as Basavanna and Appayya Deekshitar speak of the attributes of Shiva."