Colm J. Meaney is an Irish actor best known for television series like ‘Star Trek: Deep Space Nine,’ ‘Star Trek: The Next Generation,’ and ‘Hell on Wheels,’ and films like ‘The Snapper’ and ‘The Van.’ He learnt acting from the ‘Abbey Theatre School of Acting.’ He became an Irish National Theatre member and worked with different theatre companies touring across England for around eight years. He made his debut on television in the late 1970s and got his big break with the recurring role of Chief Miles O'Brien in the American sci-fi TV series ‘Star Trek: The Next Generation.’ He then left the series to reprise the role as part of main cast in its spin-off ‘Star Trek: Deep Space Nine’ that ran concurrently with the former. Meanwhile, he made his big-screen debut, and earned acclaim for performances in films like ‘The Snapper,’ ‘How Harry Became a Tree,’ ‘Kings,’ and ‘Alan Partridge: Alpha Papa.’ His other notable works are television series ‘Hell on Wheels’; miniseries ‘Random Passage,’ and the Eugene O'Neill play ‘A Moon for the Misbegotten.’