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God-like power. Everyone who gets their hands on it seems to turn compassionate. Would the same thing happen even to garbage like me? I want to know... What's it feel like? What does it look like from up there?
~ Kenny expressing his desire for power.
Everybody I've met... was all the same... Everyone had to be drunk on somethin' to keep pushing on. Everyone... was a slave to somethin'.
~ Kenny reflecting on his life.

Kenny Ackerman is a supporting antagonist in the anime/manga series Attack On Titan, serving as the secondary antagonist of the Uprising Arc and a cameo antagonist in the flashbacks of the Marley arc. He also makes a cameo in Grisha Yeager's memories of the War for Paradis arc. He is the uncle of Levi Ackerman and brother of Kuchel Ackerman. He's a former serial killer from the Underground and is a Captain of the Military Police Brigade serving as the leader of the Anti-Personnel Control Squad and an enforcer of the Royal Government and the Reiss Family. 

He is voiced by Kazuhiro Yamaji in Japanese and Phil Parsons in English.


Kenny's main goal was to obtain power, and his personality was molded around this goal. As such, he was a ruthless, sarcastic and manipulative individual who did not hesitate to do anything to get the job done, including a murderer or a traitor. He operated with downright professionalism, hiding his emotions behind a fixed expression and showing cruelty and displeasure in his mission. However, he actually enjoyed the act of murdering, to the point of becoming an infamous serial killer. He was strongly impulsive and spontaneous to kill Uri Reiss when they first met.

Kenny had a strange sense of humor, seen when he said that his grandfather's story about the oppressive persecution of the Ackermans was "funny", and when he freed Eren Yeager in order for him to fight against Historia just for his own entertainment, even though the future of humanity was at stake. He occasionally showed a cynical and contemptuous mood, like when he told Rod Reiss that he was sticking around, because he was looking for a toilet.

Even so, he was also truly respectful and conceivable to those who he believed they deserved, like Uri or his second-in-command. Contrariwise, he disliked cowards and disrespected them regardless of their positions. Not only did he demand answers from the king Rod Reiss when killing the latter's mistress, but he also called Rod "Your Majesty" with an extremely vituperative tone. Kenny later revealed that he only obeyed Rod as a plan to obtain power, and that his true intentions were always to become a Titan and gain the Coordinate himself; which was in direct opposition with Rod's goals.


Kenny was an infamous serial killer that stalked people in the capital of the kingdom, Mitras. His most known way to kill was to slit the throats of his victims which earned him his infamous handle "Throat Slasher Kenny", and it was rumored that he murdered over one hundred members of the Military Police Brigade. He also trained Levi when he was younger and later they parted ways. Kenny became a member of the 1st Brigade. He raised Levi as own after his sister Kuchel who is prostitute.

Many years later, after the breaking of Wall Maria he killed a prostitute, the mother of Historia Reiss after asking to Rod Reiss if her and Historia were related to him. Lod Reiss denied it and Captain Ackerman slit Historia's mother's throat. He wanted to do the same with Historia but her father Rod Reiss saved her life by telling her that her new name would be Christa Renz, and she was never allowed to talk about what happened in that farm.

Years later, Captain Ackerman appears as the leader of group sent to retrieve Eren and Historia from Dimo Reeves. He tells Reeves that he personally trained Levi and then kills him in the same way he killed Historia's mother, claiming that it is his own fault for Reeves' betrayal. 

After the death of Dimo Reeves he kidnaps Eren and Historia and later, along with his men, he kills Nifa, Keiji and Abel.





  • Kenny's back story, preferred method of killing, physical appearance, and the title of Chapter 57 being "Kenny the Ripper" resemble real-life serial killer Jack the Ripper. One theory of the Ripper's identity and motive was that he was a government agent murdering victims as part of a larger conspiracy.
  • Hajime Isayama has stated that Kenny's character was partially inspired by the character Trevor Philips from Grand Theft Auto V.


           AOT logo.png Villains

Main Characters
Eren Yeager | Reiner Braun | Zeke Yeager

Nine Titans
Founding Titan | Attack Titan | Beast Titan | Colossal Titan | Armored Titan | Female Titan | War Hammer Titan

Pure Titans
Bearded Titan | Gluttonous Titan | Smiling Titan

Royal Family
King Fritz | Karl Fritz | Rod Reiss

Paradis Island
Darius Zackly | The Kidnappers | Floch Forster | Kenny Ackerman | Aurille | The Puppet King | Military Police Brigade | Church of the Walls | Dimo Reeves | Lord Xavi Inocencio | Titan Cult | Yeagerists | Daz | Samuel Linke-Jackson

Tybur Family
Willy Tybur

Marleyan Military
Theo Magath | Sergeant Major Gross

Warrior Unit
Zeke Yeager | Reiner Braun | Bertolt Hoover | Annie Leonhart

Anti-Marleyan Volunteers