"Prototype"
Nice stylistic choice at the beginning of the episode with a black-and-white sequence of the Unit 3947 being beamed aboard Voyager, as seen from the Unit 3947's POV. I like that it takes until the end of the Teaser before we see what Unit 3937 looks like, and that we only see it through a reflection. Up until that point, the audience is wondering what it even is.
It takes Torres a while to figure out how to give the Unit 3947 proper energy, by repairing 3947's power module and then adapting it to accept Voyager's plasma energy. Then comes the twist: only the race that build the machines like Unit 3947 could repair or build their power modules. This race was called The Builders, and they went extinct decades ago. 3947 sees Torres as being just like The Builders and wants her to create more power modules, so they can construct more Automated Units.
This leads to an interesting Prime Directive question. Torres brings up an interesting point about helping a species that had become sterile and Janeway has a counterargument that there's a difference between a biological species that had become sterile and the Automated Units that never had the ability to reproduce in the first place. Janeway's correct here in that giving them a new ability to reproduce is a violation of the Prime Directive and could change the balance of power in the Delta Quadrant. But what's interesting is that it contrasts with what Janeway will do in a few seasons when she sides with the Borg to fight Species 8472 when those in the Delta Quadrant were actually hoping that Species 8472 would defeat the Borg. That's getting way ahead of myself but it's the first example that jumped to mind of Janeway taking the exact opposite approach later on. Back to this episode.
The Automated Units look like Maria, the robot from Fritz Lang's 1927 film Metropolis, except anatomically male instead of female. Just like R2-D2, who they act just as polite as. The only difference is the Automated Units are silver instead of copper. And they sound like and speak with Data's inflections.
No surprise that Unit 3947 kidnaps Torres when she tells him that Janeway won't allow her to help them. Being an android in the classical sense, I'm assuming, 3947 looks at things in a binary way: Torres can help, so Torres will help if she's taken away from Janeway. That binary thinking comes back when Torres tries to explain to 3947 that he wouldn't even have been reactivated if Janeway hadn't agreed over Tuvok's objections. But all he sees is that Janeway is an enemy right now, and must be destroyed. There's no nuance. It's black-or-white, yes-or-no, on-or-off, 1-or-0.
The Automated Units try to destroy Voyager and only relent when Torres agrees to build more power modules. When Torres tells Janeway she has no choice, 3947 gets right in front of Torres and takes up a large part of the image on Voyager's viewscreen, looking deadly and dangerous. It's a great directing choice for something like this. It's like something you'd see on the cover of a '50s comic book, but I mean that in a good way.
When Torres is in the lab where 3947 wants Torres to build the power modules, there's a robot skull prominently displayed. The way it looks, it reminds me skulls of the cyborgs from the Terminator movies. Add that to what I described about them earlier, and it's clear the creators of this episode wanted to work in as many easter eggs to other science-fiction as possible. Including other Star Trek, when Torres mentions Data when 3947 asks if there are any androids in her society.
Unit 6263 wants Torres to build a power module before Voyager can repair itself, Torres says she's not sure if she can, and he says that she'll either build a module or she and the Voyager crew will die. If that's not binary-thinking, I don't know what is.
When enemies of the Automated Units, also automated units themselves, attack, it gives Voyager the opening to rescue Torres. You can tell the other side apart because they're copper.
It's revealed that the Pralor (whose automated units are the one's we've been seeing) and the Cravick were enemies, they tried to end the war thus ending their use for the robots. Being a threat to their existence, the automated units now saw the Pralor and Cravick as the enemies and annihilated them before continuing their conflict with each other. Meaning that these Automated Units exist only for war and only care about victory through war. This is no doubt common to a lot of science-fiction works, including -- I'm assuming -- those of Isaac Asimov's. This type of backstory also wouldn't have felt out of place in TOS, if the Enterprise were to have ever encountered warring robots. By the way, the concept of warring robots also sounds just like Transformers.
With the Automated Units fighting each other, Paris is able to take a shuttle and rescue Torres, then Voyager is able to escape. It takes until the last minute, literally, for the Torres to be rescued, but the episode still finds time to see Janeway and Torres to have a heart-to-heart as Torres tells Janeway she had to destroy something she gave life. That's an appreciated button at the end of the episode.
If I were one of the Automated Units, and I had the rate this episode, it would either be a 01 or a 10. Fortunately, I'm not an Automated Unit, so I can find something in-between and give this episode an 8.