danger days: the true lives of the fabulous killjoys warner bros. fourth studio album by the american alternative rock band. it is a concept album based on the lives of the 'fabulous killjoys', who live in california in the year 2019. the band's alter-egos are the four killjoys: 'party poison' (gerard way), 'jet-star' (ray toro), 'fun ghoul' (frank iero), and 'kobra kid' (mikey way). the album includes the singles 'na na na (na na na na na na na na na)' and 'the only hope for me is you'.