**Gary Lydon is an Irish actor known for his intense performances in character roles. He has often collaborated with director John Michael McDonagh, appearing in acclaimed films such as *The Guard* (2011), where he played the ambiguous Sergeant Gerry Boyle, and *Calvary* (2014), demonstrating a remarkable ability to tackle complex and morally ambiguous characters.

His other notable film appearances include Martin Scorsese's *Gangs of New York* (2002) and the Oscar-nominated drama *Brooklyn* (2015). Lydon is appreciated for his authenticity and ability to embody often rough, working-class or marginalized characters, giving them depth and humanity. His style is characterized by a solid stage presence and naturalistic acting, making him a recognizable face in Irish and international cinema.