Billie Joe Armstrong (born February 17, 1972) is the main songwriter, lead vocalist, and guitarist for Green Day.

For much of the band's career, they have been a trio with drummer Tré Cool, who replaced John Kiffmeyer in 1990 prior to the recording of the band's second studio album, Kerplunk (1991).

Guitarist Jason White, who has been a touring member since 1999, was a member from 2012 to 2016.

He steals my fiancee." Billie Joe and Adrienne became engaged soon after, and planned their wedding in about two weeks.

In the documentary ''Behind the Music'', Adrienne says "We didn't think about it, we just did it." The ceremony took place in Billie Joe's back yard and lasted five minutes; they wrote their own vows: one Protestant, one Catholic and one Jewish, because they were of no particular religion.

He is the only member of Green Day who uses his given name, as the other two members, Mike Pritchard (Mike Dirnt) and Frank Edwin Wright III (Tré Cool), have switched to shorter nicknames.

Together, they are co-founders and part owners of the independent label Adeline Records, to which he has a side band called Pinhead Gunpowder with Green Day second guitarist Jason White which is on Lookout! Armstrong has also worked as a producer, most notably in a co-production with noted punk producer Mass Giorgini, legendary producer/owner of Sonic Iguana recording studio, and Lafayette pop-punk band Squirtgun.

She works at Adeline Records and co-owns Adeline clothing.

In 2002 rumors had been circling that Billie Joe had died in a tragic car accident, until a statement on Green cleared things up.

While studying Sociology in Minnesota State University, Adrienne met Billie Joe Armstrong and asked him where she could buy a copy of their album.

Billie has remarked that he had spotted Adrienne as he peered into the crowd from the stage during the gig and he was immediately taken by her beautiful black locks of hair.

He is also a member of the band The Network, along with the rest of the members of Green Day.