A quick note on full NPC's and quasi-NPC's. In the case of full NPC's, the player shooting at the NPC may call a hit or a miss on that NPC opponent. That player may also choreograph that NPC's movements. That player may also call hits and injuries upon his or her own PC.
Example:
Ossanlin's ARC indicates movement up ahead in the corridor and he looks up just in time to see a large male Andalite round the corner. He throws himself to the side as the Andalite's opening shot sears past. He shoulders his ASAR, squeezing the trigger several times. The first shot misses, but the second catches the Andalite in a leg, sending him to the ground. The Andalite fires a second shot as he falls, the bolt of blue energy grazing Ossanlin's shoulder. Ossanlin grits his teeth against the blossom of pain and squeezes off another shot from his ASAR, this one catching the Andalite in the head, his form crumpling entirely.
Ossanlin glances at the burn mark across his shoulder and pulls the pain-suppressant injector from his medkit, administering a shot underneath one of his scales and then replacing the injector in its slot. The burning pain subsides to a dull throb. Morphing would take away the injury, but that will have to wait.
All players are allowed to control stock NPC's (or cannon-fodder, as I like to call them) in this manner. You may also declare that a stock-NPC has fired a shot or taken actions toward someone else in your party or line of sight. Keep things reasonable, but otherwise, have fun with it. You can make yourself look pretty dang bad (in a good way) with this system. Just remember to keep actions and abilities within your character's limits.
With quasi-NPC's, they will be mod-controlled. Myitt and Terenia will control the Rebel 'quasis' while I'll control the Andalite 'quasis' as I have already done. If those two want to allow Kitsunemarie to control some rebel quasi-NPC's, I'll leave that up to them. Those three have a fairly large, well-developed idea of the rebellion (as was mentioned in an above post), so it would make sense.