Who is Odd Thomas (Brother Odd) from Brother Odd and what is their importance?

Odd Thomas is twenty-one years old, and after losing his best friend and girlfriend sixteen months previously, Odd has chosen to stay at St. Bartholomew's Abbey for an indefinite period of time. He is picking up the pieces slowly, but still has trouble finding any real purpose or meaning in his life since her death. Originally from Pico Mundo, Odd is vouched for by his longtime friend and police chief of Pico Mundo, Wyatt Porter, and the town's Catholic priest, Father Llewellyn. Father Llewellyn was Stormy's uncle, and Stormy was the love of Odd's life.