Swami is primarily a Hindu honorific title, loosely akin to "master" or "lord". It is derived from Sanskrit and means "owner of oneself", that is, a complete master over instinctive and lower urges. It is a title added to one's name to emphasize learning and mastery of a specific field of knowledge, most often religious or spiritual.
In Hinduism, when one becomes a swami, one is a god. Swamis have full control of their bodies, and are all-knowing. Many swamis no longer need to eat or sleep, receiving all their energy from god. There are many swamis in India, most of whom will remain up in the mountains, without food or water, meditating. Swamis are coming down from the mountains, realizing that our world is not following the path it should be. Many swamis can be found sharing enlightenment to all races, explaining how every religion is connected and intertwined.
cf: wikipedia.org