He’s created to keep people out of Abandoned Asylums/houses/etc. Because the people that go in the abandoned areas are often getting injured. How Spirit Man keeps people out of the area is by scaring them, like making fake ghost sounds or projecting little ghost girls. His busters only create fog and projections.
On his free time he messes with people going out to get “ghost footage” and even messes with the ghost hunter TV shows.