Good Will Riker wrote:
Mathis was a turncoat villain in the film adaptation of Casino Royale
, but the writers of Quantum of Solace
ret-conned him back into a good guy to redeem him before his death.
You don't go from intentionally trying to cheat the British government out of $100 million+ to Le Chiffre and try to poison Bond and then turn around and become Bond's friend "just like that."
I don't buy it. That kind of sudden "change of heart" is more a product of lazy writing more than anything else.
Mathis was never bad in CR
. It was Vesper all along.