WARNING: The following contains spoilers for Chainsaw Man #84 by Tatsuki Fujimoto, Amanda Haley and Sabrina Heep, available now in English from Viz Media.
Chainsaw Man's Makima claims she will use the titular Chainsaw's power to create a better world for humanity by ridding it of painful struggles, like war, death and hunger. While this sounds like a righteous cause, Makima's prior actions align more with the goals of a dangerous villain than those of a virtuous savior. Whether it's a ruse or a misguided mission, looking at the path of deadly destruction left in Makima's wake is a severe cause for concern.
In the series' latest chapters, Kishibe, a veteran Devil Hunter, leads an Anti-Makima squad to square up against the dangerous Control Devil. If having an entire force dedicated to taking you out doesn't isn't a big enough red flag, then Kishibe's plan to summon the Hell Devil is a clear indicator of just how frightened people are of Makima. As Denji clashes with the Hell Devil in full Chainsaw Man form, Kishibe takes the opportunity to confront Makima, who details her surprising plan.
As Makima explains, any Devil that Chainsaw Man eats has their name erased from existence, including people's memories of them. When Kishibe questions her intentions, Makima quickly indicates she plans to use that power for good by controlling the Chainsaw Devil herself. Being the Control Devil allows her to gain control over everything she believes to be lesser than herself. By conquering the Chainsaw, Makima claims she'll use him to erase certain evils from the world. This would give her the frightening power to erase anything she viewed as a threat to humanity's happiness.
Makima has long been one of the most feared characters in the series, but it's Chainsaw Man who's known as "the Devil that Devils fear most." The more a Devil is feared, the more powerful they are, so it's only natural that if someone where to aim to become the strongest, then they would need to garner the most fear. Being the Control Devil already makes Makima a menacing figure, especially when considering the morality of forcing someone to do what you want, but controlling the Chainsaw Devil would take her to another level entirely.
Even Makima's invulnerability comes at a dark cost — her contract with the prime minister transfers any harm done to her to unsuspecting Japanese citizens. Most of Makima's abilities seem to come at the cost of human life, including a horrifying attack where, by sacrificing someone, she can flatten a person like a pancake wherever they are in the world just by saying their name. Makima's cruelty even includes mob-style intimidation tactics, like meeting with members of the Yakuza and presenting them with a bag filled with the eyes of their loved ones.
Makima is completely unfazed by the death she causes, even if it's people who have put their trust in her. Before the fight with the Gun Devil, Aki and Angel look to Makima to prevent the fate the Future Devil predicted for Denji and Power. As they make their way to her, Angel asks Aki why he fell for Makima in the first place, but the young Devil Hunter can't remember. As we later see, Aki and Angel have both had their memories altered and become further victims of Makima flexing her Control Devil muscles as she forces their contracts with her to combat the Gun Devil.
Aki's fate of becoming a Gun Fiend and then needing to be taken out by Denji is a direct result of Makima's actions. Then when Denji confided in Makima the pain he felt over losing his friend, she turns around and gruesomely kills Power right in front of him. Aki and Power were not only major characters in Chainsaw Man, but Denji's best friends, as close to him as family. The tragedy of their deaths is that they were given this happiness only to be killed for the sole purpose of destroying Denji's spirit, traumatizing him. Though this could still be in line with Makima's goal of controlling the Chainsaw Devil for the greater good, it certainly doesn't justify her actions and is incredibly cruel.
It's not uncommon for a villain to have an idealistic, narrow-minded goals, but it's their readiness to make reprehensible sacrifices to achieve them that makes them bad guys. As a person happy to sacrifice any life, Makima will do anything necessary to achieve her goal. While she claims to want to make the world a better place, how she is willing to reach that objective and the chilling thought of what 'better' means to Makima could spell bad news for people everywhere.