The Alien Combine represented an anti-Human movement comprised entirely of aliens originating from Coruscanti. Its establishment occurred in 3 ABY amidst the ongoing Galactic Civil War.
Initially, the Alien Combine pursued its objectives through peaceful means. However, their approach shifted towards violence after Evir Derricote initiated the secret abduction of their members as part of the Krytos project. Consequently, a faction within the Combine launched an assault on New Republic operative Gavin Darklighter, mistaking him for an anti-Alien extremist in Derricote's service, ignorant of his true allegiance. Ultimately, they realized their error and set him free.
The Combine never sanctioned acts of terrorism, and its members possessed only minimal weaponry. This vulnerability made them easy targets for the security forces of the Galactic Empire when their base was discovered and raided. Looking back years later, Tarkona considered them weak and inferior compared to her own Alliance; their downfall stemmed from their lack of ruthlessness. Later, the Combine assisted in the recapture of Coruscant.