In the dynamic realm of My Hero Academia, numerous Pro Heroes stand ready to assist those in need. However, this noble cause attracts a host of villains intent on not only causing harm but also thwarting the heroes' efforts to aid the innocent. The ongoing clash between heroes and villains forms the heart of the series.
This dichotomy has spurred many formidable super villains to target, incapacitate, and even eliminate any Pro Hero standing in the way of their malevolent schemes. A number of antagonists have succeeded in this grim task, resulting in the demise of beloved characters.
9 Dabi
Claimed the Lives of Snatch & Many Others
![](https://hwwmpntrepvshdemcjtw.supabase.co/storage/v1/object/public/p/g/dabi-and-the-hero-he-killed-snatch.webp)
- First Manga Appearance: Chapter 57
- First Anime Appearance: Episode 31
Dabi, also known as Toya Todoroki, wields pyrokinetic powers and a ruthless demeanor, leaving a trail of destruction in his wake. His callous nature is evident in his brutal slaying of Snatch and over thirty innocent individuals, showcasing his high body count.
8 Twice
Ended Eel Boy's Life and Spawned a Deadly Legacy
![](https://hwwmpntrepvshdemcjtw.supabase.co/storage/v1/object/public/p/g/twice-s-sad-man-parade-and-the-hero-he-killed-eel-boy.webp)
- First Manga Appearance: Chapter 77
- First Anime Appearance: Episode 43
Despite a tragic past, Twice turned to villainy, ultimately causing the demise of Eel Boy. His ability to create lethal clones led to the formation of Sad Man’s Parade, a dangerous force that persists even after his own demise.
7 Overhaul
Executed Sir Nighteye and Numerous Villains
![](https://hwwmpntrepvshdemcjtw.supabase.co/storage/v1/object/public/p/g/overhaul-and-the-hero-he-killed-sir-nighteye.webp)
- First Manga Appearance: Chapter 115
- First Anime Appearance: Episode 62
Overhaul, also known as Kai Chisaki, showcased a callous disregard for life, dispatching heroes and villains alike. His shocking slaying of Sir Nighteye marked a pivotal moment, leaving a lasting impact on the series.
6 Muscular
Eliminated Water Hose and Numerous Guards
![](https://hwwmpntrepvshdemcjtw.supabase.co/storage/v1/object/public/p/g/muscular-and-the-heroes-he-killed-water-hose.webp)
- First Manga Appearance: Chapter 72
- First Anime Appearance: Episode 40
Muscular's vile nature and lethal quirk led to the demise of Water Hose and a trail of destruction, including the lives of prison guards. His reign of terror was halted by the intervention of Izuku Midoriya, ending his rampage.