What was the band name Armstrong and Dirnt used before Sweet Children?

The band name Billie Joe Armstrong and Mike Dirnt used before Sweet Children was Desecrated Youth.

In 1987, Armstrong and Dirnt were teenagers in Rodeo, California, when they formed an early group with bassist Sean Hughes and drummer Raj Punjabi. That four-piece band was called Desecrated Youth and rehearsed in Punjabi’s garage. A few months later, the group changed its name to Sweet Children, the name it used before adopting Green Day in 1989.

This history is easy to blur because several names are associated with members of Green Day. The Lookouts was the punk band connected with drummer Tré Cool, while Foxboro Hot Tubs and Pinhead Gunpowder were later side projects involving Armstrong and other musicians. None was the original name of the group that became Green Day. The band’s first live performance took place on October 17, 1987, at Rod’s Hickory Pit in Vallejo.