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Dr. Catherine Marceaux is a French psychiatrist who studies on alien mind-to-mind contact with humans.


Following the War of 1996, Dr. Marceaux treated survivors that were mentally traumatized by the invasion. Later on, Catherine researched victims that were in direct mind-to-mind contact with the aliens. She soon discovered that many of these victims saw visions of alien symbols, more prominently of a circle with a line drawn through it.

Catherine later published her findings in which she theorized that contact between humans and aliens showed a residual effect. She conjectured that part of this residual contact was the absorption by humans of alien semiotic structures, of the symbols by which they understood and negotiated the universe. Several years later, Marceaux discovered that the people who were recovering from their mind-to-mind contact were regressing back to their symptoms that are worse than before.

Catherine had applied on three occasions for a visa to enter the National Republic of Umbutu to conduct her studies amongst the Umbutu people due to their exposure in their ground war against the aliens. But she was denied due to the nation's strict isolationist policy.

In 2012, Catherine attended the ESD Spring Expo in French Guiana. There, she first met the ESD Director, David Levinson. Catherine would meet Levinson again in Lisbon and eventually form a brief bond between them.

Catherine had written a number of books, including Life After Contact, Collected Case Studies [about] Psychic Residual Condition and The Circle and the Alien Mind.

War of 2016[]

In July 2016, Catherine was finally able to be granted permission to visit Umbutu after Dikembe Umbutu took over the country. She was eventually reunited with Levinson, who was also invited by Dikembe to study the country's intact City Destroyer that was recently reactivated. She, Levinson, and Dikembe entered the City Destroyer and discovered the vessel had sent a distress signal into space from the end of the War of 1996. Soon afterwards, Catherine discussed her findings on alien consciousness with Levinson and Dikembe.

During the eve of the War of 1996 20th anniversary, an unknown alien ship appeared over the Moon and was shot down by the ESD. Catherine forced Levinson to allow her to visit the alien crash site due to the ship's similarities to the spherical symbol seen in her patients' visions. As they arrived to the Moon during the 20th anniversary of the War of 1996, the group witnessed the return of the aliens in the form of a massive mothership. Catherine and the others managed to retrieve an intact container from the wreckage and were dragged to Earth by the alien mothership's gravity before safely fleeing to Area 51.

Upon arriving at Area 51, Thomas Whitmore allowed himself to interrogate an alien prisoner. Catherine then shows the prisoner the picture of the spherical object and demand why its kind is afraid of it and the meaning behind it. This, however, provoked the alien to almost kill Whitmore until it was killed by Dikembe.

Catherine was later requested by Dr. Milton Isaacs for her expertise in examining Dr. Brackish Okun's condition. She was surprised to find Okun's extensive drawings of hundreds of alien symbols drawn in his hospital room. After photographing the drawings, Catherine presents them to Dikembe as he is able to understand some of the alien language. She and Dikembe realized that the image of the sphere referred to a galactic war between the aliens and their enemies. Thereafter, the cargo taken from the alien wreckage was opened by Dr. Okun, releasing an alien artificial intelligence and revealed itself as the nemesis of the invaders and was sent to help humanity.

After the "Sphere's" presence was made known to the aliens, Levinson and Okun devised an elaborate trap to kill the alien's queen by using the Sphere as bait. Catherine wished David good luck on his part to trap the queen's ship, and in turn David expresed to Catherine that he regretted not having spent more time with her. Catherine observed the entire battle between the ESD and the aliens from Area 51's command center. After the alien queen's death, Catherine reunited with David and was then introduced to his father Julius Levinson.