Danger Days: The True Lives of the Fabulous Killjoys

Danger Days: The True Lives of the Fabulous Killjoys (often referred to as simply Danger Days) is the fourth studio album by the American rock band My Chemical Romance, released on November 22, 2010, by Reprise Records. It was produced by the band alongside Rob Cavallo and recorded in Calabasas, California. The primary musical inspiration for the album came from contemporary rock, psychedelic rock, and proto-punk bands of the sixties and seventies. It was the final album released by the band before their six-year disbandment from 2013 to 2019.

Like the band's previous album The Black Parade, Danger Days is a rock opera. The album's storyline takes place in post-apocalyptic California in 2019, where a group of rebellious outsiders known as Killjoys battle against an evil corporation. In 2013, frontman Gerard Way published a comic miniseries that continued the story described in the album.

To promote the album, the band embarked on a world tour, titled The World Contamination Tour. It lasted from October 2010 to February 2012, and included concerts in Europe, North America, Asia and Oceania; the band also co-headlined the 10th Annual Honda Civic Tour with Blink-182. Danger Days received generally positive reviews from critics and sold 112,000 copies in its first week, debuting at the top of the Billboard Rock Albums and Alternative Albums charts, and at number 8 on the Billboard 200. It also appeared in the music charts in several other countries. By February 2011, Danger Days had sold over a million copies worldwide. In May 2026, a deluxe edition reissue of the album was announced, featuring most of the original tracks remastered, and nine additional bonus tracks. It was released on July 10, 2026.