The people in The Chronicles of Riddick only accept to convert after an innocent man is killed .
The next day , the Necromonger high priest called 'The Purifier ' coerces the populace into converting , At first the people refused to do so but change their minds when The Lord Marshal known as Zhylaw ( Colm Feore ) kills an ordinary man ( after standing up to him in front of the Necromongers ) Just then as the people kneel , Riddick shows up and refuses to obey the Lord Marshal 's offer from Commander Vaako ( Karl Urban ) one of Lord Marshal 's Necromongers , instead Riddick kills a Necromonger known as Gigar the one who killed Imam .
The Chronicles of Riddick