1. Koro Sensei

Koro Sensei is an anime that acts as the most dangerous hitman in the Assassination Classroom anime series, so sadistic that he was even dubbed the god of death. After he obtained the tentacle form, he finally gained extraordinary power that was beyond reason, even in his anime story he was able to run at an incredible speed reaching 24696 km / hour.

Thanks to that ability, Koro Sensei became a monster that was very difficult to defeat, even he was able to avoid bullets being fired at him very easily.

2. Marshall D. Teach

Marshal D. Teach is an anime character who plays the main antagonist role in the anime series One Piece, with the power of yami yami no mi, it has the ability to devour all the things around it.

Even after the great war that took place at Marineford, he gained the power of the strongest man at the time. Whitebeard who has the power of Gura Gura No Mi, he is able to shake the earth with the power of an earthquake that can even trigger a tsunami.

Armed with these two powerful demonic powers that made him very difficult to defeat, he was even able to absorb all the attacks and strengths of his enemies. So strong, he was also able to destroy all his enemies with an instant and even he was able to sink an island with the power of the earthquake he had.

3. Byakuran Gesso

Byakuran Gesso himself is a fighter who is also the head of the mafia in the series, but that is not what makes him very strong. His other strengths are Byakuran who is able to enter other parallel worlds and also uses technology from each of the parallel worlds he has visited before. The technology he obtained made him very difficult to defeat, but because of his character who acted as an antagonist.

4. Zeref

Zeref is the strongest and invincible anime character. This is because, Zeref has extraordinary power and even he has the power of death that makes him unable to die. If Zeref is angry, then he can kill all living things around him.