I have seen Riddick and Chronicles of Riddick. And in both the movies we have seen that bounty hunters are behind him.
So I have a question about how much bounty is on Riddick's head.
It was 1.5 million.
When Riddick meets Tombs face to face, he asks what the bounty on his head is priced at. Tombs first lies and says a million but is coaxed into telling the truth of 1.5 million. 5 years prior, the price displayed on Riddick's rap sheet in "Dark Fury" was roughly 1.1 million- so within 5 years, the bounty was raised about 400 grand.