When the
Separatists attacked
Coruscant in the twilight of the Clone Wars, they employed as many different and cutting edge combat starship designs as they could to better the chances of victory in their most bold and daring strike. Swarming from the hangar bays of Confederacy battleships were tri-fighters, automated starfighters equipped with groupings of four
blaster cannons. The bracing arms surrounded a rotating gyroscopic ball that housed the droid's brain.
The fully automated tri-fighter is bigger and less maneuverable than the slim vulture fighters, but nonetheless posed a threat, particularly to the slower ARC-170 fighters.