Billie Joe Armstrong is an American musician and actor. He is best known for being the lead vocalist, guitarist, and primary songwriter of the rock band Green Day, which he co-founded with Mike Dirnt in 1987. He is also a guitarist and vocalist for the punk rock band Pinhead Gunpowder, and provides lead vocals for Green Day's side projects Foxboro Hot Tubs, the Network, the Longshot and the Coverups. Armstrong has been considered by critics as one of the greatest punk rock guitarists of all time.
Armstrong developed an interest in music at a young age, and recorded his first song at the age of five. He met Dirnt while attending elementary school, and the two instantly bonded over their mutual interest in music, forming the band Sweet Children when the two were 14 years old. The band later changed its name to Green Day. Armstrong has also pursued musical projects including numerous collaborations with other musicians.
Armstrong has acted in several films and TV series, including Like Sunday, Like Rain, Ordinary World, King of the Hill, Haunted, and Drunk History.