The Rebellion of Neopia Strikes back founded by No_more_sloth888 and was around at the same time as the Resq Rangers HQ. It served as ally in the war with the Darkness Minions, Fight Club and Empire of Eternal Darkness. It also made up the Heroic Delian Legion, along with the Anti-Sloth Academy.
It's decline came when the Darkness Minions were resurrected as the Dark Corporation. The account Wiz had in the DC guild was discovered and kicked, before being able to do major damage. The Dark Corporation single handily defeated, The Rebellion and the Academy. Causing both to become inactive. In the end, the HQ stood and surrendered.