YMMV / Chimamire Sukeban Chainsaw

• Complete Monster:
  • Nero Aoi is a Mad Scientist who serves as the series villain. A previous victim of bullying due to experimenting on animals, Nero decided to take over the world by killing off her classmates and configuring them into an army of remodeled corpses. She creates a serum that causes people to become insane and violent, and keeps her childhood friend Yuto around as a pet to molest and mentally torture. Resurrecting herself, she converts the Volunteer Club into the Guardians, a group of knight templars who kill anyone suspected of sin. Kidnapping Kimberly to lure Geeko and company to her lair, she has them pitted against previously-deceased murderers and forces them to kill a crazed, out of control Kimberly that results in the death of Mizushima. Once again resurrecting herself, she partakes in the Mondokanoke prison where her remodeled corpses are tortured, and later hunts down Geeko and Bakutani once they escape, where she ends up killing Geeko and attempts to resurrect her as her most powerful fighter. Obsessed with fueling her own ego, Nero stood out in this twisted world as a selfish psychopath hated by all.
  • Final four volumes: Mari Fuwa is the warden of Mondokanoke, an all-female prison for remodeled corpses. Believing that she can do whatever she wants as the warden, Fuwa creates a festival where she invites rich clients to watch her prisoners engage in grotesque sexual acts and deadly Gladiator Games for their viewing pleasure. Having Geeko imprisoned in order to compete in her gladiator games, Fuwa at one point as Geeko stripped naked, crucified, left out in the cold rain, and whipped after she kills one of her prized prisoners, doing the same to Bakutani after she refuses to partake in the erotic show. Regarding her prisoners as "fools with no hope of a future", Fuwa has them hunt down Geeko and Bakutani in return for their freedom, allowing some bounty hunters to infect them with a gas that makes them kill-crazy.
  • reflesh: Mirei is the true head of the St. Argento Academy. Posing as the academy's student council president, Mirei lures in young girls and remodeled corpses to the academy, where she has them killed to either bathe in their blood or store it in bottles to drink in order to gain power. After Geeko's arrival inspires many first-year students to escape, Mirei personally executes them, laying their naked corpses out in a pile for everyone to see. Desiring Geeko's blood for herself, Mirei uses her tentacle hair to decapitate one of Geeko's friends, before trying to kill Geeko herself.