The brothers along with `` Funny Man '' , portrayed by David Della Rocco , embark on a journey to rid their city of crime and evil , in The Boondock Saints .
After both experience an epiphany , the brothers , together with their friend `` Funny Man '' ( David Della Rocco ) , set out to rid their home city of Boston , Massachusetts of crime and evil , all while being pursued by FBI Agent Paul Smecker ( Willem Dafoe ) .Duffy indicates that the screenplay was inspired by personal experience , while living in Los Angeles . (
The Boondock Saints