The first half of the season is dominated by the Dimple storyline where he finally turns on Mob. That was really the biggest unanswered question from season 2. Not what is going on with Mob's powers, and absolutely not anything to do with Tsubomi. Dimple is really the 3rd main character, and him finally making his big play was built up well... only for them to get to the confrontation, and realize that Dimple does not really have any motivation for what he is doing. Who was Dimple when he was alive? Was he ever a human, or just a spirit of something else? This is never answered, and instead we get a half baked talk it out no jutsu scene where Dimple says that he just wanted a friend to do it with. Except he wanted to be worshipped before he ever met Mob. This had been his goal for a long time, and when he finally had it seemingly he did not really want anything from it. He did not want to change the world, or get anything done with having so many followers. It was just a blind ambition that could have been explained by telling us who he really is. The original writer was just lazy with this story though. Dimple deserved better.
The first arc sort of soured the mood on the rest of the season. The alien stuff was kind of fun, but also the animation was all over the place. Episode 8 had the characters off model a majority of the time, and was a strange quality drop. Tsubomi is in the show so rarely that I forgot Mob's original goal was to impress her by improving himself, and by the end she still really is not a character. More of an object for his affection. Rather his other personalities affection. One of the main ways that Mob Psycho and One Punch man stand out is their almost anti-shonen set up. Mob is so overpowered that he wins most fights without much effort, but this becomes a problem when the show goes on for too long. Also when the other characters are not really doing anything interesting. Everyone vs Shimazaki was very impressive visually from season 2. It also allowed the show to highlight the other psychics who are much lower than Mob on the power scale. Mob walking over all of the other psychics was boring at the end, and highlighted the series' biggest weakness that had been mostly kept contained except in the conclusion of season 1. Mob is too strong for the fights to be engaging 95% of the time, and the show has to rely on impressive animation to get it done. The final arc starting with Mob being another of the hundreds of anime characters to get hit by a car was lazy and uncreative writing, and what follows was just meh for the most part. Redoing the Teru loses joke was bad, and why is Dimple back now? Who cares time to end the episode. Mob deserved better than this.
Season 1 is mostly good. Season 2 is great, and is really why Mob is considered one of the better anime series of the last decade. This is going to sound dramatic, but as an anime only viewer the story ending after season 2 would genuinely have been better for the show's overall quality. Compared to most other anime season 3 is good, but compared to Mob Psycho 100 season 3 was disappointing.
