Nicolette DuClare

Nicolette DuClare is the daughter of late Illuminati member, Beth DuClare, and a major supporter of the French terrorist group, Silhouette, in the first game (she was even romantically involved with its leader, Chad Dumier). When her mother was killed by Majestic-12, Nicolette, for a time, went on a rebel spree, openly challenging MJ12 to take her down. However, she finally realized the danger she was putting herself in, and she hid herself in the Club La Porte de L'Enfer in Paris. She never returned to her mother's chateau before JC Denton arrived in Paris.

Deus Ex
In his quest to meet the Illuminati leader, Morgan Everett, JC searches for Nicolette after Chad Dumier informs him that Nicolette is his best bet of contacting Everett. At the Club la Porte de l'Enfer, JC finds Nicolette in a corner of the club's upper level, and asks her (not knowing who she is) to contact Nicolette for him. Assured that JC is not an MJ12 agent, Nicolette meets JC behind the club and reveals her identity.

Nicolette then takes JC to her mother's chateau outside of Paris to find her mother's computer, through which JC can contact Everett. She leads JC to certain locations, including her mother's bedroom, to find clues as to where her mother's computer is hidden. Eventually, JC finds the secret basement where Beth's computer lab is hidden. Nicolette follows JC as long as he is in the chateau. After JC contacts Everett and leaves the chateau, Nicolette does not reappear in the remainder of the game.

Deus Ex: Invisible War
After the Collapse, Nicolette took joint control of the Illuminati with her lover, Dumier. The two plotted to take control of the world the best way experience has taught them, through social divison. So while Dumier led the WTO, Nicolette founded the Order Church to serve as the antithesis of the WTO, and became known as "Her Holiness". With the members of the two organizations fighting each other, Nicolette and Dumier manage to control them to a surprisingly high degree. When Alex D travels to Trier, Germany, he learns that Nicolette was taken hostage by the Templars at the Black Gate Ruins. After he rescues Nicolette, heencounters Dumier, st which point Nicolette reveals her identity, and the Illuminati along with Dumier.

From that point on, Nicolette openly assists Dumier in his actions, and tries to convince Alex to side with the Illuminati. If Alex refuses in the endgame at Liberty Island, Nicolette does not hesitate to kill him.