"monster" characters

This book tells the reader the backgrounds of each criminal, (Bobo, Steve, King, Osvald) and about their account of that night, starting with Osvaldo Cruz. He states that his participation with three others in a drugstore robbery resulted in the unplanned murder of the drugstore's proprietor, Alguinaldo Nesbitt. According to Cruz, the original plan was that Steve would go into the drugstore, check for police or citizens, and then make a signal if the coast was clear. All sources indicate that Nesbitt drew a gun to defend himself against the robbers, then one of the robbers wrestled him for it causing Nesbitt's death when the gun discharged. Bobo takes the witness stand to confirm that James King pulled the trigger and Steve, who he hardly knew, was indeed meant to signal an all-clear. Other than this synopsis of the night of the murder not much else is revealed about the characters and their personalities.