Fayth's Litter
Draco's ship had four construction drones on it. Of the four, three remain; the fourth was destroyed (killed?) by the Pershings when they found Draco's hidden vessel. The skinhead goons discovered its location because the large autonomous drones had been left unattended out in the woods after they had covered the ship and Draco had left.
While Fayth had an inkling of a notion that the drones behaved strangely around her, she didn't realize the care and feeding of them would fall to her. When she saw the damaged drone playing whack-a-mole with the Pershings trapped in Draco's ship--seemingly trying to exact vengeance against those who had taken one of them down--Fayth felt a bond form. Once the Pershings were dealt with, she nursed the damaged one back to health, and gave them a new home. Their pen is currently the hangar bay in Bunker November.
Since Fayth has befriended Brock (he is almost a simple animal, himself!), he has taken a shine to the big, dopey drones Fayth has taken under her wing. He spends some of his free time each day hanging out with them in the pen. He has taken to teaching them to play soccer, and now that he has a new suit of full-body armor, he has stepped up to rugby. Once he lands in the hospital, he will probably step it back down to soccer. Or he might not. Brock is not the sharpest tool in the shed, sometimes.
After the team's second trip to Seattle (Recruitment Drive, parts I, II & III), Fayth needed to de-stress for a bit, so she looked to the solace of her litter, quiet and unassuming. They would not burden her with more worries. They love her. During this visit, she relaxed, playing soccer with them as Brock does. She also learned they now had names. Brock had stenciled one on each of them: Thunder, Flash and Alamo.
Thunder and Flash's names are stenciled on their hulls. Alamo's name is stenciled on his massive right foreleg; this is the one that was blown off by a Pershing anti-tank rocket, and the one salvaged from their fallen brother and replaced by Fayth.
For being so large and menacing, Thunder, Flash and Alamo are all surprisingly agile and...gentle. Unless you make them mad. If there is any hierarchy among them, Alamo seems to be the leader. He is more curious, and the cause of most things being slowly removed from the hangar because he tends to tinker.
When no one is around, the drones do interact with each other. They pace around, tussle and bat at each other. They kick the soccer balls around, and they surprisingly spend a lot of time...napping, for lack of a better term. They will take turns squatting down in pairs in a dark corner of the pen. At no time are all three of them "asleep." They seem to have a shift-system figured out, and one of them will always pace around nearby while the other two are inactive.