Green Day are a powerhouse punk rock trio from California, known for igniting the '90s pop-punk explosion. Bursting onto the mainstream with Dookie in 1994, they blended raw energy, catchy hooks, and snotty rebellion into anthems for disaffected youth. Billie Joe Armstrong’s snarling vocals, Mike Dirnt’s driving basslines, and Tré Cool’s manic drumming created a tight, infectious sound. Reinventing themselves with American Idiot in 2004, they fused punk with theatrical ambition, cementing their legacy. Politically charged yet deeply personal, Green Day balances angst and accessibility, making them one of modern rock’s most enduring, influential, and relevant voices.