Title: Moira MacTaggert
Content: Moira appears in episodes of X-Men, voiced by Lally Cadeau. She first appeared in the episode "The Cure", where supposedly knew a doctor with a cure for mutants. The next episodes were "The Phoenix Saga", where she was worried about Professor Xavier's control over his mind. In the "Dark Phoenix Saga" she was working to help Jean Grey be freed from the Phoenix. Then, the next appearance was in "Proteus", in which she revealed to Xavier that Proteus was her son. Here she seems to fill the function of Gabrielle Haller, an old lover of Charles and mother of his son, the powerful but disturbed psychic 
Title: Moira (given name)
Content: Moira MacTaggert, a recurring character in X-Men comic books ; Moira/Max Sweeney, on the Showtime television network series The L Word ; Moira O'Hara, a character in the TV series American Horror Story ; Moira Queen, Oliver Queen's mother in the Green Arrow comic books ; Moira Queen, Oliver Queen's mother in the TV series Arrow ; Moira O’Deorain, a character in the video game Overwatch ; Wendy Moira Angela Darling, a character in Peter and Wendy by J. M. Barrie ; Moira Banning, wife of Peter Banning/Peter Pan in the movie Hook ; Moira Thaurissan, Queen Regent of the Dark Iron Clan, a minor character in the popular MMORPG World of Warcraft ; Moira, a 
Title: Moira MacTaggert
Content: Moira is played by Olivia Williams in brief appearances in the feature film X-Men: The Last Stand. She appears on a video talking about the ethics of using mutant powers, such as transferring the mind of a dying man into the body of a patient with no higher brain function. She is later seen seated next to Beast at the memorial service for Xavier. After the film's ending credits, she appears again attending to the brain-dead patient, who suddenly speaks to her in Xavier's voice. ; Rose Byrne portrays a young Moira in X-Men: First Class. She is a CIA agent working to uncover the mysterious 
Title: Moira MacTaggert
Content:  David. Her next appearance was "The Phalanx Covenant, Part 2", when she was infected by Phalanx. Her last appearance was in "Graduation Day", when she and Beast debated on how to contact Lilandra Neramani to help Professor X. ; In Marvel Anime: X-Men, the character Yui Sasaki (voiced by Yoshiko Sakakibara in the Japanese version and by Gwendoline Yeo in the English) is introduced as that version's Moira, as she slightly bears resemblance to her. Like Moira, Yui is a geneticist and has a relationship with Professor X when she still owns the Sasaki Institute in Japan. But unknown to Charles, she is the mother his 
Title: Moira MacTaggert
Content:  McCoy). Moira was one of the feature characters in the 2011 two-issue limited series Chaos War: X-Men. She is one of the main characters in House of X and Powers of X, written by Jonathan Hickman. House of X #2 retconned established continuity, revealing her to be a mutant with the ability to reincarnate within her own timeline; on her death, she is returned to the moment she is conceived with full knowledge of her previous lives. Her knowledge of potential futures, when divulged to Professor X and Magneto, leads to the formation of the nation-state of Krakoa and the new status quo for the X-Men books following House of X and Powers of X.
Title: House of X and Powers of X
Content:  Moira I: Moira Kinross (later Cowan) lives an unassuming life as a teacher, with a husband and three children. Moira later dies peacefully at the age of 74 from natural causes. Moira II: After her death, Moira suddenly finds herself back in her mother's womb with all the memories of her previous life. Moira is actually a mutant with the ability of resurrection. While she conceals her nature as best she can, she is nevertheless considered a prodigy and decides to become an academic in biology and psychology at Oxford to understand what she is. After two decades of research, she spots her former classmate Charles 
Title: Moira MacTaggert
Content:  After the events of M-Day and upon the reawakening of Vulcan, significant portions of Moira's history with Xavier and the original X-Men are called into light. While in the rubble of Muir Island research center, Banshee freaks out when he notices Moira standing outside in the pouring rain, but when he rushes outside she has already disappeared. When she appears to him again, and believing he's really seeing Moira’s spirit, Sean decides to follows her to a house where she leads him to an old stockroom. Moira’s image then fades away as Sean finds important notes from Xavier which reveals that during the early years of Xavier's Academy, Moira founded and ran a secondary facility not far from the Xavier School, in which she had her own students—youths whom she took out of bad situations and adopted 
Title: House of X and Powers of X
Content:  revealing himself as a mutant on television. Realizing this opportunity, she takes a flight to America that proves fatal after it crashes in the ocean. Moira III: In this life, Moira instead decides to focus on anthropology and genetics and seeks out Xavier while at Oxford. However, Xavier's arrogance and Moira's distaste for her own nature leads her to devote her life to creating a cure for mutation. She succeeds only for her lab to be destroyed and her colleagues to be killed by Mystique, Pyro and Destiny. Destiny's precognitive powers allow her to realize Moira is actually a mutant invisible by standard mutant detection methods. 
Title: Moira MacTaggert
Content:  Dr. Moira MacTaggert (sometimes spelled MacTaggart, McTaggart, McTaggert) née Kinross, more recently known as Moira X, is a fictional character appearing in American comic books published by Marvel Comics. She first appeared in The Uncanny X-Men #96 (Dec. 1975) and was created by writer Chris Claremont and artist Dave Cockrum. She works as a geneticist and is an expert in mutant affairs. She is most commonly in association with the X-Men and has been a member of the Muir Island X-Men team and Excalibur. Olivia Williams played Dr. Moira MacTaggert in the 2006 feature film X-Men: The Last Stand. In the 2011 feature film X-Men: First Class, Rose Byrne played a younger Moira MacTaggert, but in this film, the character is a CIA officer rather than a geneticist. Byrne returned as MacTaggert in the 2016 feature film X-Men: Apocalypse.
Title: Moira (Overwatch)
Content:  make her character visually distinctive among a fast-paced battled within the game. Moira is voiced by Genevieve O'Reilly, an Irish-Australian voice actress that Chu said was perfect for the role. As interview to the lead writer Michael Chu, They were interested in a new support character when the team was looking at the landscape of the game, they were also interested in the idea of making a less benevolent, villainous healer. Since her newly released, there was a buff for Moira which her moves was boosted and especially her Coalescence, which was causing issues due to its blinding effect. Chu explains that the inclusion of Moira felt them satisfied and their fans for the supporting character and wanted to have a different gameplay.

Question: who is moira in x men?
Answer: Olivia Williams.