«Жұлдыз жолы» сериалының кейіпкері – Кейко О'Брайен

Television character played by Rosalind Chao from Star Trek

Keiko O'Brien (born Keiko Ishikawa) is a character in the fictional Star Trek universe, played by actress Rosalind Chao. Introduced in 1991, she is the civilian spouse of Starfleet crew member Miles O'Brien (played by Colm Meaney) appearing occasionally in later seasons of the series Star Trek: The Next Generation (1987–1994), and more frequently as a supporting character throughout Star Trek: Deep Space Nine (1993–1999), as well as in related media such as novels. The producers wanted her as a regular character on Deep Space Nine, but Chao was only available part time. Keiko was introduced as a romantic interest for the recurring Next Generation character of Chief O'Brien, and stories involving her and the couple's children allowed Star Trek to expand its narrative beyond weekly space missions. She is a professional botanist, and becomes a teacher on Deep Space Nine, where her husband has been stationed. She is of Japanese ancestry, which is reflected in Keiko's and Miles' Japanese Irish marriage ceremony, and by her observance of other family traditions.

The character was introduced in the fourth season episode of The Next Generation, "Data's Day", which depicts her imminent wedding to Miles – which she temporarily cancels – as one of several subplots in which the main cast character Data is involved. The words in their wedding were based on Captain Kirk's in the original series 1966 episode "Balance of Terror", according to writer Ronald D. Moore. The character appeared prominently the following season in the episode "Disaster", in which she gives birth to Keiko and Miles' first child Molly in the crew lounge Ten Forward during a shipwide crisis.

Chao was offered a full time role on Deep Space Nine, which she turned down because the demands on her would be too strenuous. Keiko instead appears irregularly, with a focus on the impact of Miles’s job on the O'Briens' relationship. Finding limited opportunity to use her botanical expertise, and concerned about the educational opportunities on the station for her daughter and others' children, she starts a school, where Jake Sisko and Nog are also students. The first season episode "In the Hands of the Prophets" shows Keiko in conflict with religious leader Vedek Winn over her teaching of science and a secular perspective on elements of Winn's Bajoran faith. In the fourth season episode "Body Parts", Keiko and her unborn child are injured, and to save the fetus it is placed into Major Kira's uterus to carry to term, as an in story explanation for actress Nana Visitor's pregnancy. The couple and Kira form an awkward ad hoc family for the duration of the pregnancy, until their son Kirayoshi is born, in the fifth season episode "The Begotten". Meanwhile, Keiko has a central role in the fifth season episode "The Assignment", when she is possessed by a malevolent entity. During the Dominion War late in the series, Keiko and the children are evacuated from the war zone. After the war, Keiko and her family relocate to Earth, where Miles will be an instructor at Starfleet Academy.

Keiko has appeared in over twenty Star Trek novels. Examples include The Fall: Revelation and Dust, Warpath, Warped, and The Tempest.

Keiko was also released as a toy figurine, Playmates no. 65121.

Viewers and critics had mixed reactions to the character. Some criticized her as unlikable and "shrewish", based on her abrupt (and short lived) cancellation of her wedding to Miles, and her domestic expectations of him in Deep Space Nine episodes. CBR praised the character and her relationship with Miles as a realistic depiction of the strains that marriage can involve, and ranked Keiko the 7th best recurring character in all of Star Trek. SyFy described her as "fascinating", rating her among the 21 most interesting supporting characters of the franchise. In 2020, ScreenRant suggested that Keiko and Miles would make a good spin off series.