Domino Derval is a fictional character from the James Bond series, created by author Ian Fleming. She first appears in the novel "Thunderball," published in 1961. Domino is portrayed as a beautiful and complex woman, who becomes involved with Bond while seeking revenge for her brother's death. In the story, Domino is the mistress of the villain Emilio Largo, who is a key figure in the plot. Her character is notable for her intelligence and resourcefulness, ultimately aiding Bond in his mission. Domino's role highlights themes of loyalty and betrayal within the narrative.