Aidan Gillen is an Irish actor known for his versatile performances in film and television. He gained widespread recognition for his role as Petyr Baelish, also known as Littlefinger, in the popular HBO series Game of Thrones. His portrayal of the cunning and manipulative character earned him critical acclaim and a dedicated fan base. In addition to Game of Thrones, Gillen has appeared in various other projects, including the television series The Wire, where he played Tommy Carcetti, and the film Bohemian Rhapsody, in which he portrayed John Reid. His career spans over two decades, showcasing his talent across different genres.