Hanuman is considered to be an avatar (incarnation) of Lord Shiva. Shri Hanuman, a great disciple of Sri Rama, is the symbol of devotion and dedication. Lord Hanumana is a provider of courage, hope, knowledge, intellect and devotion. Hanuman is in the form of Vaanar (monkey). He is usually pictured as a strong monkey holding a gada (mace) which is a sign of bravery and having a picture of Lord Rama on his chest which is a sign of his devotion to Lord Rama.
Worship of Hanuman
Hanuman is worshipped for his strength, agility and valor. He is especially popular with body-builders, who believe that like him, one need to be celibate in order to have a strong body.
The worship of Hanuman, symbolizes the worship of the Supreme Lord, for acquiring knowledge, physical and mental strength, truthfulness, sincerity, self-sacrifice, modesty, loyalty, and profound devotion to the Lord.
Every temple of Sri Rama contains an idol of Hanuman. Worship of Hanuman is considered mandatory to complete the worship of Lord Rama.