Following their departure from the service of Dr. Finitevus and fleeing Mobius Prime altogether during the titanic battle between the Second Enerjak and Super Sonic, Scourge the Hedgehog and his girlfriend Fiona Fox came to Anti-Mobius using a Warp Ring super-charged with energy from the Master Emerald.
Initially planning to do some soul-searching, Scourge, remembering Sonic the Hedgehog's choice words about how they weren't so different, was shocked to find how right he was, and resolved to set apart and re-make everything on Anti-Mobius to distinguish it from the Primeverse. Within a matter of days, Scourge took over the planet and crowned himself King and Fiona his Queen. He also took back control, possibly using threatening means, of his old gang and reformed them into the Suppression Squad, who, now distinguished greatly from their counterparts, were forced accept Scourge's leadership. The Suppression Squad acted as Scourge's back-up as he conqered the entire planet. Scourge soon became bored and had them steal Dr. Ivo Kintobor's Globe Posts to invade the Prime Zone.
Upon repairing a pair of stolen Globe Posts, Scourge sent the Squad ahead through the portal to launch a daring attack and invasion of Freedom HQ, and later joined the battle himself. After a pitched battle, the base itself was dangerously close to collapse, forcing the Freedom Fighters to retreat and allow the Squad to occupy the base (though according to Sonic, enraged at Scourge's victorious taunting, it will only be temporary).
Shortly after taking Freedom HQ, Anti-Tails (aka Miles) contacted Sally and the Freedom Fighters to discuss a truce. As it were, the Suppression Squad was tired of Scourge and, aside from Fiona, they wanted him gone. Still seething from his takeover of the group, Miles offers the plan that Sonic can wear Scourge down, at which point the combined strength of the Freedom Fighters and the Suppression Squad will finish him. Sally agrees to the plan, despite Tails' protests, and Miles returns to Freedom HQ. Scourge is annoyed that he took so long on his supposed mission to bomb Mobotropolis, but Miles ignores him and simply tells Alicia that "the plan was a total success." Alicia replies that, "It's now time to show our king just what we think of him," with both Patch and Boomer shown clearly readying for battle.
Scourge and Fiona fought ruthlessly, but were outnumbered and, as a result, were defeated after Sonic's return from Moebius. Then, both Sonic and Scourge were stunned by Boomer's weapon and thrown into a portal to Moebius by Miles.
Later, both the Freedom Fighters and the Suppression Squad had come to Moebius to ensure Scourge's surrender but became victims of Super Scourge's wrath.
Princess Alicia Acorn
Scourge the Hedgehog