Kiddo randomly wanted to watch this. Might have to block it on Netflix so that never happens again.
I'd comment on the plot, but I'm not sure what it's meant to be. You've got the ragtag "Secret Life of Pets" knock-off group teaming up, then there's the city slowly being destroyed, the villain that (SURPRISE!) isn't quite what he seems, religious and political allegory tossed in randomly for good measure, and an ending that just sort of happens out of nowhere. It's like there were 5 teams writing the story and no one communicated with anyone else. Things were either skipped over so quickly that you're left guessing what happened or needlessly padded for run time.
Characters were all over the place. Not just "wow, they covered a lot of locations in the city" but more "every animal is a different ethnicity and animation quality." And yet, despite the (forced) diversity in animal ethnic dialects, we still get the mundane and cliché character tropes. The rogue loner that has to lead a team and grows fond of them, the pampered upperclass members that come to respect the aforementioned loner despite his social standing, the lovable-yet-dim character, the random wise dude that meditates, several tough-but-stupid antagonists along the way, a villain working behind it all to kill the heroes for one reason or another, and the noble character willing to sacrifice himself along the way (though you don't see the body because SPOILER: he's a bargain-bin Sonic the Hedgehog and escaped using super speed and won't reappear until the villain is defeated).
Speaking of the villain, he's threatening for all of five non-consecutive minutes and is quickly dispatched when his right-hand-bot betrays him in the final moments to help the good guys. WOW. He hates the good-guy bot because the little guy is an older model that has emotions and was supposed to be dismantled. That's about all you get for his character building. He's evil because he's evil; one of the poorest sort of villain classifications that exists.
The animation was mediocre -- several scenes even looked like they were just touched-up test renders. You get that sort of Uncanny Valley feeling from watching the animals. The robots were okay, but you have an awkward mix between shiny Big Hero 6 and Next Gen, with some grungy and rusted Wall-E thrown in for good measure. There's a point where a monorail launches off its track and has a very drawn-out "suspense slow-motion" period, but we cut back inside to see the animals moving around at normal speeds, which is about par for the course in this show, and throws off your understanding of whether the scene is slowed down or if the train is magically levitating before a crash.
I cannot NOT recommend this movie enough. One star is too many, but it's required.