David Harbour is an American actor best known for his role as Chief Jim Hopper in the popular Netflix series, Stranger Things. Born on April 10, 1975 in New York City, Harbour was raised in the town of White Plains, located in Westchester County, New York. He is the son of Lois and Kenneth Harbour, and has two siblings, a brother and a sister.Harbour attended Byram Hills High School in Armonk, New York, where he was involved in the school's drama program. He then went on to study at Dartmouth College, where he graduated with a degree in English. After college, Harbour moved to New York City to pursue a career in acting.In the early years of his career, Harbour appeared in a number of stage productions, including 'The Tempest' and 'The Rainmaker.' He also had small roles in a number of television shows and movies, such as 'Law & Order' and 'The Practice.' In 2005, he made his Broadway debut in a production of 'Who's Afraid of Virginia Woolf?'Harbour's breakout role came in 2010 with his portrayal of Dexter Tolliver in the crime drama 'Rescue Me.' This was followed by his portrayal of Paul Devildis in the HBO series 'Boardwalk Empire' in 2011. In 2013, he landed the role of Shep Campbell in the critically acclaimed film 'The Newsroom.'In 2016, Harbour was cast as Chief Jim Hopper in the popular Netflix series 'Stranger Things.' The show, which is set in the 1980s, tells the story of a group of friends who uncover supernatural secrets and government conspiracies in their small town. The show quickly became a cultural phenomenon, and Harbour's portrayal of the gruff, but lovable Hopper was widely praised. He has been part of the show since its first season and has been an integral part of the storyline.In addition to his work on 'Stranger Things,' Harbour has also appeared in a number of films, such as 'The Equalizer' (2014), 'Black Mass' (2015), 'Suicide Squad' (2016), and 'The Green Hornet' (2020). He will also be starring in the upcoming movie 'Black Widow' (2021).In recent years, Harbour has also become known for his philanthropy and activism. In 2019, he made a viral speech at the International Emmy Awards, in which he called for the entertainment industry to use its power to create positive change in the world. He has also been an advocate for mental health awareness and has spoken publicly about his own struggles with depression.Overall, David Harbour has established himself as a talented and versatile actor, with a career spanning over a decade in film and television. He is also known for his philanthropy and activism. He has become a household name for his portrayal of Chief Jim Hopper in the hit Netflix series 'Stranger Things' and is expected to continue his successful career in the years to come.