As a Fridge subpage, all spoilers are unmarked as per policy. You Have Been Warned.
Fridge Brilliance
- As noted elsewhere, in the anime adaptation Saitama is for some reason the mascot of a fast food chain named MobDonald's. That adds the implication that Shigeo isn't just nicknamed Mob because he doesn't stand out in a crowd or that it is the Japanese word for "John Doe", but also because his inexpressive look resembles that of "Saitama MobDonald".
- Mob's situation is the reverse of Saitama's. Saitama performs amazing feat after amazing feat, but rarely gets any credit for them. Meanwhile, Mob's reputation builds and builds as people see him in action (White T Poison, Lord Psycho Helmet), but he just wants to be a normal kid.
- In Episode 2, Mob and Reigen dress up as girls in order to infiltrate an all girl's academy for an assignment, but Reigen gets caught due to his Paper-Thin Disguise. While this may have been dumb on Reigen's part for his poorly thought disguise, it's also clever since the security guards were more focused on him and would allow Mob, who has the actual ability to complete the exorcism, to pass through the gates without issue.
- Of course Mob forgives Reigen for lying to him. A) Reigen is doing what his clients are asking—he's only lying about his methods, B) he's been helping people (for money, yes, but he's running a business), C) his advice to Mob is good advice, and D) he's doing what he says he's doing for Mob, namely helping Mob control his powers.
- As well as that, Reigen has always treated Mob as a mostly normal kid in spite of his powers, and has looked out for his wellbeing for as long as they've known each other. Even though he's definitely a fraud, Reigen still tries to be a good role model to Mob.
- When Mob first attains 100% Gratitude and gives all of his power to Reigen, it takes Reigen all the way to 1000% instead of just 100%. Reigen's significantly more mature emotional state means he can use much more of Mob's power than Mob can, and despite barely knowing what was happening to begin with, he still outperformed 100% Mob. This could mean that:
- 1) if Reigen were to actually get accustomed to psychic powers he could very well surpass 1000%.
- 2) Mob might be subconsciously aware that even at his most emotional, he can get even stronger.
- 3) ???% Mob vastly exceeds even 1000% of his potential.
- Or the 1000% could be referring to Reigen's potential, hence it being specifically referred to as "Reigen 1000%". Reigen, being a normal human being, won't have that much psychic power even at his full potential. The sheer amount of power given from Mob could have given Reigen ten times the psychic ability Reigen could have ever gotten naturally, thus resulting in "Reigen 1000%."
- In Season 2 of the anime, Reigen and Mob have a falling-out, causing Mob to temporarily quit his job at Reigen’s agency. Reigen tries to escape his guilt and self-loathing by going to a bar and getting drunk, which leads to him hyperventilating and throwing up in an alley. However, after Reigen leaves the bar, the bartender notes that there wasn't any alcohol in Reigen’s drink. So Reigen’s reaction wasn’t an alcohol-induced sickness—it was a panic attack. And Reigen doesn’t even realize it.
- In the arc where Reigen is exposed as a fraud, when many alleged victims line up to sue Reigen, he's confident that most of them haven't even meet him, and that the ones who did hadn't been damaged or hurt by his business practices. This is because Reigen knows he didn't do anything that would hurt people, and that, aside for a few jerks, none would want to sue him—that is, they act more like Hanako (a woman from the first episode who Reigen insulted around for her looks before confronting the ghost that had been ruining her sleep) rather than the man who had demanded him to curse someone or the rich college kids that wanted him to exorcise a family of harmless ghosts and now blame him for being unable to get a job.
- When the conference room starts to shake and things start to fly around, Reigen neither confirms nor denies that any of the supernatural activity is his doing. If he were to confirm that he was responsible, then his lie could be used against him if he were to be involved in another career-ending scandal in the future. If he denied it, then the paparazzi would have their win and officially ruin Reigen's life. By avoiding the question, Reigen is able to one up the paparazzi by denying them any satisfaction, while using the mystery of the conference earthquake to spark curiosity and interest about his "psychic" powers.
- The conference with Reigen can be seen as a spin on the scene where Mob is being harassed by a duo of scammers. Both events are important in showcasing Mob and Reigen's relationship, showing how much both of them care for each other; additionally, the resolutions of each situation completely contrast one another—the exhibit is absolutely trashed which Reigen thought was Mob's doing (though Mob denied it), while in the conference Reigen assumed it was Mob's doing, and he was actually completely right.
- In the final arc, ???%'s identity is revealed to be the suppressed part of Shigeo Kageyama. This makes the moniker "???%" make perfect sense. ???% is by definition unburdened by the same complex that affects Mob, and thus cannot explode. This means ???% is called such because the percentage leading up to ???%'s explosion is fundamentally undefined.
- Shigeo and Ritsu's parents are never shown to have checked in on their boys while away at the onsen retreat Shou somehow convinced them to abandon dinner—and Shigeo, who hadn't yet gotten home from passing out at the marathon—for. Shigeo slept as if comatose for over a day after his 100% Tenacity/Obsession explosion... and they never knew.
- How many youth were kidnapped and brainwashed into supporting Claw? Touichirou was stated to have created Claw roughly 20 years before the main plot and there were at least hundreds of young esper soldiers in both the 7th Division building and the World Domination Arc (one member even looked like he was in his mid-thirties). While many of them were recovered by the government after the fall of the False King, there's no telling how many lost their lives and mentality during their time serving Claw.
- How many organizations are out there that are just like Claw or worse? Teruki mentions to Mob that there are hundreds of organizations around the world who research espers and psychic potential. While Claw stood out as the main one who intended to conquer the world, there are possibly other organizations with sinister goals and are following a similar plan/goal just like Claw. And considering how public Claw was with their takeover, those organizations may be taking notes from the shadows on what to do when it's their time to shine.
- The high-school boys who mug Mob and Ritsu—unintentionally awakening ???%—might not have survived, given how frightened Mob is of using his powers against other people even in his own defense in the first season.
- In Chapter 100, just before venturing into the incredibly dangerous psychic storm to talk to Mob, Reigen takes off his shoes and socks, leaving him barefooted. While an odd choice of clothing to remove considering the debris and ruins he'd have to run across, it's actually a common practice for people who have made peace with ending their own lives.
