Who Is the Protagonist in "The Destructors"?

Greene describes the protagonist as someone who "should have been an object of mockery – there was his name (and they substituted the initial because otherwise they had no excuse not to laugh at it), the fact that his father, a former architect and present clerk, had 'come down in the world' and that his mother considered herself better than the neighbors. What but an odd quality of danger, of the unpredictable, established him in the gang without any ignoble ceremony of initiation?"