Vesper is Bond's partner throughout the film, but by the end, it is revealed that she had been working with Quantum the entire time in order to save her boyfriend. She ultimately dies in the end of the film, choosing to let herself drown as a compensation for her betrayal to Bond. Before she dies, she silently urges Bond not to feel guilty for her death. Upon being debriefed by M, Bond acts coldly upon learning of Vesper's betrayal, saying that 'the job's done and the bitch is dead'.
It is revealed in "Quantum of Solace" that Vesper's boyfriend is actually a member of Quantum, whose job is to seduce young women with high connections and pretend to be kidnapped in order to force them into becoming double agents for Quantum, therefore making Vesper an even more tragic villain. This information vindicates Vesper in Bond's eyes, and he tells M after tracking down and arresting Yusef that she was right about her.
- Vesper is an anti-villain, as she is directly working for the main villains and conspiring against Bond the entire time, but it isn't by choice.
- Vesper is similar to Mirage from The Incredibles; both are highly beautiful and seductive femme fatales who lure the protagonist into bad situations and happen to be working with the bad guys, but also grow to like the protagonist.