It introduces three different characters into the setting of MHA, and by different, I mean introducing a Batman without the brain, Spiderman without the uncle, and a random high-school girl dressed up in a kinky way, because you need your weekly dose of fanservice. There's also the main plot being the usual implication of a bigger bad doing something behind the scenes without bringing any thought into the lore for it to stand out. Yeah, it's not the most original, but the appeal comes because of the name Vigilantes stampled in its title, so you get heroes acting faster than usual or like superhumans brute forcing their way through the scene. A lot of their action scenes shows them not doing herolike things while also being a bit brutal and niche. But they are all acceptable things that I can follow without it feeling forced. And yes, because there is no Deku to be found.
Since it is still a spinoff of MHA, so you're still going to find a lot of familiar characters that have appeared in the original story, however thanks to the timeline of this anime being set before the original story, the story can still have time to get its own identity while being set in the MHA Universe, without overrelying on the original cast of MHA. Unlike MHA, who feeds its main story with implications of masterminds playing behind the scenes, Vigilantes does the same thing, except it's a lot faster and straightforward to it, so you get to see some growth in between character development and plot tensioning. But the best part? There's no Deku in here.
The theme the anime decides to do is to follow a comic book like format, and it does that somewhat decently, it shows sound effects as you would commonly see for an serialized superhero comic book, with each impact being followed up by a romanized sound effect that is complemented by the production's sound quality. The anime looks good too, although it doesn't leave a strong impression of what MHA is known for, those little bursts of ember that carried the entirety of MHA whenever everything aligned together for one epic moment after another. Also there is no Deku, so you get to see a lot of better scenes.
I'd like to say that Vigilante is a decent show, not because of its story, its characters, its nuances, its music, its design, or any of that schtick I just mentioned. It's not by far the best product you could find for a spinoff of MHA, when it's handled by a subdivision of Bones, and it's lacking some talent you'd usually find in the main story. But I can say that Vigilante is worth the watch because it's a bit more straightforward and has no Deku in it. So there you have it. Whatever you just read, it may not be the best, but I hope you get my point.
Thank you for reading.
