The race of mechanical undead known as the Necrons have ended up in the Star Wars galaxy and intend to harvest more souls in the names of their masters the C'tan. They do not get to replenish their losses at all in-between fights and they also do not have access to their self-repair capabilities.
They go through the gauntlet twice. The second time they get back-up from their masters the C'tan. One Nightbringer and one Deceiver.
The rounds are:
1. Naboo as of TPM, which includes Qui-Gon Jinn and Obi-Wan Kenobi
2. The Nightsisters of Dathomir c. the Clone Wars show led by Asajj Ventress and Mother Talzin
3. The Rebel Alliance minus the Big 3 (Han, Luke, and Leia). They also don't get the MilleniumFalcon.
4. The GATOR (Grand Army of the Old Republic) minus the Jedi Order. So just Clones and Republic ships
5. The CIS/Separatists led by Count Dooku, General Grievous, Asajj Ventress, Sora Bulq, and Durge.
6. The GATOR during the The Old Republic MMORPG backed up by that era's Jedi Order. This includes Satele and the Hero Of Tython at his/her peak.
7. The GATOR during the Clone Wars backed up by the Prequel-Era Jedi
8. The Yuuzhan Vong
9. The Empire during their Golden Age (IE Vader and Palpatine are both still alive)
10. The Empire during the events of "Dark Empire" (DE Sidious plus World Devastators and all that)
11. The New Republic backed up by the New Jedi Order, Imperial Remnant, and Mandalorians
How far do the Necrons and their masters get?