Ayyappan, also called Dharmasastha and Manikandan, is a Hindu deity popular in Southern India. He is considered to be the epitome of dharma, truth, and righteousness and is often called upon to obliterate evil.
Although devotion to Ayyappan has been prevalent earlier in South India, his popularity rose only in the late 20th century. Jagadguru Adi Sankaracharya has praised him in many hymns. According to Hindu theology, he is the son of Harihara (Vishnu in the form of Mohini, and Shiva). Ayyappan is also referred to as Ayyappa, Sastavu, Hariharasudhan, Manikandan, Shasta or Dharma Shasta and Sabarinath.
The iconography of Ayyappan depicts him as a handsome celibate (Brahmachari) deity doing yoga and as an epitome of Dharma, who wears a bell around his neck. In the Hindu tradition popular in the Western Ghats of India, he was born with the powers of Shiva and Vishnu to confront and defeat the shape-shifting evil Buffalo demoness Mahishi who was considered sister of Mahishasura. He was raised by a childless royal couple Rajashekara pandiyan and Koperundevi, and grew up as a warrior yogi champion of ethical and dharmic living. In South Indian portrayals, Ayyappan images show him riding a tigress, but in some places such as Sri Lanka he is shown riding a black elephant & horse.
Ayyappan's popularity has grown in many parts of India, and the most prominent Ayyappan shrine is at Sabarimala, nestled in the hills of Pathanamthitta of Kerala. The shrine receives millions of pilgrims every year in late December and early January, many of whom prepare for weeks before and then climb the hill barefoot, making it one of the largest active pilgrimage sites in the world. The pilgrimage attracts a wide range of devotees, from diverse social or economic backgrounds, except women in their fertile age because Ayyappan is believed to be a celibate deity. He remains one of the few deities in Hindu tradition, who is respected by other religious communities, including Muslims and Christians in Kerala.