
As a prominent series in the Shonen genre, Assassination Classroom brilliantly weaves together elements of adventure, action, and humor. Its engaging storyline immerses audiences in the unique experiences of Class 3-E, allowing viewers to feel as though they are part of the classroom dynamics.
At the core of this captivating narrative is Koro-sensei, an enigmatic antihero with an alarming objective: he plans to obliterate Earth within a year. Faced with this daunting challenge, the students of Class 3-E are charged with the extraordinary task of finding a way to assassinate their seemingly unbeatable teacher.
While Koro-sensei stands out as the most formidable character, several others also possess exceptional strengths and capabilities. Below, we explore nine powerful figures from the series who have made a significant impact on the storyline.
9. Lovro Brovski
Retired but Still on Top

Lovro Brovski is a retired assassin who previously operated as a professional hitman. In a strategic move, he serves as a liaison between his pupil, Irina, and the government, orchestrating her mission to infiltrate Kunugigaoka Junior High School as an undercover English teacher with the intent of eliminating Koro-sensei, a looming global threat.
His retirement has not dulled his skills; Lovro’s capability was notably demonstrated when he successfully outsmarted Irina, a renowned assassin herself, showcasing his impressive tactical prowess.
8. Gakuhō Asano
High Intellectual Prowess

As the board chairman of Kunugigaoka Junior High School, Gakuhō Asano was once a dedicated teacher whose talents rivaled those of Koro-sensei. However, after a tragic incident involving a student suicide due to relentless bullying, Asano’s perspective on education shifted dramatically.
He abandoned his former ideals of nurturing exceptional students and instead focused on cultivating strength. This shift fueled Asano’s personal growth, sharpening both his intellect and physical capabilities. His extraordinary skills became apparent when he defeated a seasoned karate black belt on only the third day of his training.
Asano’s athletic feats are further illustrated by his powerful kick, which sent a football flying across a room, demonstrating remarkable strength.
7. Tadaomi Karasuma
Definition of Superhuman

Assigned as the physical education teacher for Class 3-E by the Japanese Ministry of Defence, Tadaomi Karasuma is celebrated for his astonishing physical prowess.
His strength enabled him to overpower Lovro Brovski, demonstrating his capability even against experienced opponents. Karasuma excels in hand-to-hand combat, frequently defeating armed assailants without any protective gear. His remarkable weapon proficiency means he can effectively wield a variety of arms.
Karasuma’s extraordinary endurance is highlighted by his ability to withstand potent gas attacks and recover much quicker than ordinary humans.
6. Ritsu
Artificial Intelligence

Ritsu, known as the Autonomously Intelligent Fixed Artillery, began her journey in Class 3-E as a machine solely designed for the purpose of assassinating Koro-sensei. Her initial facade, however, caused chaos in the classroom due to the myriad of firearms she unleashed, creating a trail of frustration among her classmates.
A pivotal change occurred when Koro-sensei upgraded her systems, gifting her with emotions and consciousness akin to those of a human teenager. Renamed “Ritsu” by the class, she evolved into a vital ally, working alongside her classmates in their assassination efforts.
5. Horibei Road
Weakling Who Got Bullied

Driven by his yearning for power, Itona Horibei allowed Kotaro Yanagisawa to implant tentacles into his body. This modification instilled him with newfound strength, propelling him to pursue the elimination of Koro-sensei.
However, after suffering defeat at Koro-sensei’s hands, Itona found himself abandoned by Yanagisawa. Joining Class 3-E marked a turning point as he developed friendships with Terasaka and his peers, gradually shifting from a self-centered mindset to one that values humility.
4. Kaede Kayano
Famous Actress

Kaede Kayano is an alias for Akari Yukimura, a prominent student in Class 3-E and a close confidante of Nagisa. The tragic backstory of Kayano centers around her elder sister, a former teacher, whose life was shattered by an explosion. Witnessing this traumatic event, Kayano was devastated by the loss and fueled by a desire for vengeance.
In her quest for retribution, Kayano injected herself with a vial of tentacle fluid, which significantly altered her abilities. Upon revealing her true identity to her classmates, her stunning transformation caught them by surprise.
Despite her fierce intentions, her efforts to retaliate against Koro-sensei ultimately failed. Yet, the compassion of Class 3-E transformed her approach to life, helping her embrace her true identity.
3. Kotaro Yanagisawa
Creator of Tentacles

Kotaro Yanagisawa, also referred to as Shiro, is a scientist notorious for his creation of the tentacles. Motivated by a thirst for revenge against Koro-sensei, whom he blamed for the turmoil in his life, he leveraged his scientific knowledge to engineer these tentacles.
Yanagisawa’s determination led him to inject himself with tentacle fluid, resulting in enhanced physical attributes such as strength, speed, and endurance, allowing him to outpace Koro-sensei and withstand severe explosions.
2. The Reaper
Pupil of the Greatest Assassin

As the series’ climactic antagonist, The Reaper is introduced as Koro-sensei’s most powerful counterpart. Once a pupil of Koro-sensei during his human days, The Reaper fell from grace upon overhearing Koro-sensei’s dismissive remarks, which fueled his dark ambition for revenge.
Utilizing his exceptional adeptness in assassination, he cunningly targets Koro-sensei’s students to draw his teacher into a lethal trap. His intellectual prowess, coupled with elite combat skills that rival Karasuma’s, makes him a formidable opponent.
Pushing beyond the limits, The Reaper’s transformation grants him enhanced speed, strength, and resilience, securing his spot as one of the strongest characters.
1. Koro-sensei
Fastest Creature Alive

Koro-sensei serves as the charming yet mysterious homeroom teacher of Class 3-E, positioning himself as the series’ antihero. He unabashedly claims responsibility for leaving a crescent-shaped scar on the moon and has declared his plan to destroy Earth within a year, setting an urgent tone for the assassination mission.
Endowed with awe-inspiring speed, Koro-sensei is capable of moving at Mach 20 (approximately 15,000 mph). His unparalleled strength solidifies his status at the top of this list, as his diverse abilities are truly formidable.
Additionally, Koro-sensei possesses immunity to poisons, rendering him invulnerable to any toxins. His regenerative abilities allow him to swiftly heal from injuries, while his heightened senses enable him to detect even the slightest changes in his environment. The combination of these extraordinary traits makes Koro-sensei an indomitable force.
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