Guy Haines is a supporting antagonist of the 2008 James Bond film Quantum of Solace. He is one of the high-ranking members of Quantum.
He was portrayed by the late Paul Ritter.
Haines happens to be the special advisor to the British Prime Minister, but he actually works for Mr. White to further Quantum's goals.
He is only seen attending a performance of Tosca at an opera house in Bregenz, Austria alongside other members of Quantum (as arranged by Dominic Greene). However, Bond identifies Haines as one of Quantum's members through the intercom system, forcing a nervous Haines to flee from the opera house.
It is unknown what happened to Haines following the deaths of Greene and General Medrano, though it is presumed that he is still at large. Eventually, it turns out that Quantum was nothing more than a pawn organization run by Ernest Stavro Blofeld of SPECTRE, thus Haines was nothing more than a middleman.
It can be implied that Haines was either executed on the orders of Blofeld to cover SPECTRE's tracks (given to Blofeld's zero tolerance for failure) or may have fled following the dismantling of Quantum.