As requested on the Spacebattles thread.
Year 4 of the Empire: A Jedi Master seeks redemption
Mechis III was one of the galaxy' premier foundry worlds. Neutral during the Clone Wars, it had been quickly taken over by Arakyd Industries and administered through 73 workers and hundreds of thousands of contractors. All of which were now fighting for their lives when the automated factories started churning out battle droids of unknown model.
"How many rounds do we still have?" the Arakyd director asked his subordinates at their base near the holonet transceiver.
"Eight thousands."
The director sighed. On one hand, they had been lucky that they had been provided with an Urthhan heavy repeater, the droids' armor was tough enough it took a lot of blaster bolts to pierce it but the 25mm rocket-propelled grenades of the Urthhan weapon could go through it easily enough, allowing their group to resist for so long. On the other end, they were facing hundreds of thousands of the monsters and growing, and they couldn't possibly hold the monsters at bay long enough to fix the transceiver and summon Imperial help, not even if the crazy Aleena with four additional mechanical limbs on his backpack that had joined them in stopped playing with his communicator and started helping.
As he checked his blaster, ready to go down fighting, he looked out - and saw the droids seize up and explode.
"Director! The transceiver works again! And whatever took over the factories has disappeared!"
"What?!"
He went at his subordinate's station, and found that not only that had happened, but all the mystery droids had self-destructed, and the transceiver was broadcasting the events on the Holonet live. Including the not-so-crazy Aleena that had somehow managed to hack the threat into self-destruction. Then, as the final part of the transmission, they saw the Aleema's bounty notice, identifying him as Kazdan Paratus - Jedi Master. The Arakyd workers turned to him in shock.
"What? We serve and protect, and this IG-88 was a threat to everyone." the Jedi said as he rose on his mechanical limbs. "That, and I have a lot of cowardice to redeem myself for."
With that, Master Paratus ran away, after reminding the galaxy that the Jedi still existed - and were their protectors.
notes
Here it is, the IG-88 Army, destroyed before inception by its natural nemesis, the Jedi who'd build droids and machines to help in his work, including assembling monstruosities from the parts of destroyed Separatist droids to unleash them on the CIS military.