Who is Monsignor from The Risk Pool and what is their importance?

The old Monsignor presides over Our Lady of Sorrows Catholic Church during Ned's younger years. He is very particular, he doesn't eat much, and he disdains children. The Monsignor takes naps after breakfast every morning and is very finicky about how the grounds look around the church. The grass must be mowed every five or six days, and the flowerbeds are in the perfect shape of a cross.