fictional character from the Star Trek universe
Miles Edward O'Brien is a character in the fictional Star Trek franchise. He appears sporadically in all seven seasons of Star Trek: The Next Generation and is a main cast member of Star Trek: Deep Space Nine. O'Brien was originally the transporter chief of the USS Enterprise-D. He was later promoted to Chief of Operations of Deep Space Nine. O'Brien is the only major Star Trek character described as both ethnically Irish and born in Ireland. O'Brien is portrayed by actor Colm Meaney.
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