Who are the Original Fabulous Killjoys?

This story will be for those who want to learn more about the first four original Killjoys (who may be referred to as the first Fabulous Four here). It will also be about the world the album Danger Days takes place in, theories about what the songs of this album are about, and the history that lead to this world. (Note: If you know more about the Killjoys than us and you read something that may be wrong, PLEASE CONTACT US because we are not perfect and do not know everything. We appreciate any help you can provide and also your support. c: )