Death Battle Fanon Wiki

The tentacles spoke to me, asked what I wanted to be. To be weak I said, to be flawed, vulnerable. To perceive weakness in others not to exploit but to protect. To be a guide, to be a teacher.
~ Koro-sensei

Korosensei is the main antagonist and anti-hero of the Japanese anime/manga series, Assassination Classroom. He is the teacher of the End Class.

Fanon Wiki Ideas So Far[]

Battle Record[]

WARNING: The following tab will reveal the numbers of wins and losses for the following character. Read at your own risk.

Battle Record

  • Wins: 3
  • Losses: 1
  • Draws: 1

Possible Opponents[]


Death Battle Info[]

  • Name means: Unkillable Teacher
  • Max Speed: Mach 20
  • Occupation: Teacher of Class 3-E, former assassin


  • Shedding Skin: Korosensei can shed his skin for a quick getaway, or to evade a fatal hit. The old skin is capable of blocking explosive force, but he can only do this once a month
  • Liquefication: After consuming a potion created by Okuda, Korosensei can turn into a slime-like liquid that can slip through tiny spaces
  • Regeneration: He can regenerate his tentacles, but doing so drains his energy
  • Absolute Defense: As a last resort, Korosensei compacts his entire body in a tiny sphere and encasing his body in an impenetrable energy shell, capable of tanking nukes.
  • Absurd Speed: Korosensei can move at Mach 20, using this speed to dodge and fly.
  • Mastery of all arts of assassination
  • Possesses a flawless memory, adding to his genius-level intellect and skill as a teacher and assassin
  • Skilled mechanic, surgeon, and chemist
  • Aside from the fact that he's a deadly super-creature that can blow up planets, he's a pretty damn good teacher.


  • Took attendance with his entire class shooting at him without taking a hit
  • Sucked up spilt soup with an eyedropper before it hit the floor, added sugar to it and put an apron on Karma at FTE speed
  • Casually thwarts assassination attempts by his students on a daily basis
  • Grabbed a sniper round out of the air with a yatsuhashi
  • Mentored Shinigami
  • Can only be killed via a special government-designed material or tentacles similar to his
  • Defeated a mutated Shinigami
  • Revived Kaede Kayano from a fatal stab wound by collecting all the blood and body chemicals that was spilt before it could hit the ground in the middle of a fight, was able to restore it all afterwards, and completely heal the impalement


  • Can only shed his skin once a month
  • Body swells when wet
  • Regenerating tentacles, losing them, and shedding his skin burns through stamina
  • Reaction is dulled when flustered/panicked
  • Shameless pervert
  • Holding down all his tentacles renders him immobile
  • Damaging his heart kills him
  • Places the safety and well-being of his students first above his own
  • Physically weak
  • During Absolute Defense, he is completely immobile