Character dossier

Miles O'Brien

Chief O’Brien

A brilliant, chronically stressed engineer keeps a dilapidated Cardassian space station running through sheer willpower, duct tape, and Irish stubbornness.

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The dossier

The ultimate working-class hero of Starfleet

Miles O’Brien is the most relatable man in the 24th century. While the captains debate philosophy and the doctors cure plagues, O’Brien is in the Jefferies tubes covered in grease, desperately trying to stop the station from exploding.

Colm Meaney brings incredible warmth and grounded humanity to the character. O’Brien is defined by his deep love for his family, his complex friendship with Dr. Bashir, and his traumatic past as a soldier in the Cardassian War.

He represents the enlisted backbone of Starfleet. Fans adore O’Brien because he proves that true heroism isn’t about sitting in the captain’s chair; it’s about showing up every day and doing the impossible, exhausting work to keep everyone safe.

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Character facts

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Appears in: Star Trek: Deep Space Nine
Portrayed by: Colm Meaney
Also known as: Chief O’Brien

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People behind the character

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Colm Meaney

Star Trek: Deep Space Nine

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Upcoming appearances

5 August 2026

ST-LV: Trek to Vegas (2026)

Las Vegas (NV), USA

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Colm Meaney

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