One Punch Manis one of the most popular action anime in the world. The series focuses on Saitama, a man who has the power to defeat anyone with a single punch. Throughout the series,Saitama faces different monsters, each with a varying threat level.
Demon-level monsters are fairly common in the series. The monsters belonging to this threat level are considered dangerous enough to destroy a city and all the people living in it. Due to the massive number of Demon-level monsters, it may seem that all of them have the same level of skill. However, there is a clear difference in their abilities.
9G5
Unlike the other members of the Monster Association, G5 was not a regular monster. He was a big robot equipped with two swords and various other abilities. G5’s exterior body was strong enough to withstand the attacks from other monsters and heroes.
He had the ability to mimic the techniques of his opponents and use them for himself. G5 could add more variations to his attacks because of his double-jointed limbs. He could even predict the moves of his opponent accurately, provided they weren’t hiding their true strength.
8Jagan
Jagan, also known as Evil Eye, was a human psychic who was turned into a monster by Gyoro Gyoro. Due to his transformation, Jagan’s psychic powers improved several times over, and he became a valuable asset to the Monster Association.
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Jagan’s psychic powers enabled him to lift buildings and throw them at his opponents. He was also able to form a barrier with his abilities, although it was not nearly as strong as Tatsumaki’s. Jagan’s threat level was not revealed, but since he could easily destroy buildings, it is plausible to assume that he was at least a Demon-level monster.
7Royal Ripper
Royal Ripper was a Demon-level threat who was affiliated with the Monster Association. He was a sadistic individual who thrived on the pain and misery of others. He would toy with his enemies before murdering them.
Royal Ripper was an expert swordsman who wielded dual blades. As the blades were attached to his body, Royal Ripper could use them in unconventional ways. In addition to his swordsmanship, Royal Ripper also had good physical attributes. He was able to put up a decent fight against Garou, but was eventually killed by the latter.
6Deep Sea King
The Deep Sea King wasthe main antagonist of the Sea Monster arc. He was an abnormally large individual who towered over humans. The Deep Sea King had different forms that he would change into depending on the availability of water.
The Deep Sea King was able to defeat the likes of Genos and Puri Puri Prisoner with his sheer physical strength. While it was certainly an impressive feat, it is important to remember that they were the weakest S-rank heroes. Also, in the audiobook “Genos, Training,” it was revealed that after his modifications, Genos could take down the Deep Sea King in two hits, which makes it clear that the monsters that came after him were much stronger.
5Hundred-Eyes Octopus
Hundred-Eyes Octopus was one of the many monsters sent by the Monster Association to wreak havoc in cities. It appeared in I-City, where it started destroying the buildings in the surrounding area.
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Many A-rank heroes were sent to quell its rampage, but the Hundred-Eyes Octopus managed to defeat all of them handsomely. It was equipped with many eyes, granting it 360-degree vision. Hundred-Eyes Octopus also had high durability, which was evident when he forced Flashy Flash to use a strong move. The monster met its end at the hands of Tatsumaki.
4Awakened Cockroach
Awakened Cockroach was a Demon-level monster who attacked C-City. The monster was confronted by multiple low-ranking heroes, but he made short work of them. Awakened Cockroach was ridiculously quick, and he was evenable to blitz Genos in their fight.
Awakened Cockroach also had a great degree of strength, as he inflicted a decent amount of damage on Genos' armor. He also had the traits of a cockroach, which made it extremely difficult to kill him with normal attacks. He was able to survive even after losing his legs. Ultimately, he was killed by Orochi.
3Choze
Choze was a sick and sordid character who thrived on hurting his opponents. He participated in the Super Fight Tournament to prove how superior he was to everyone else. Thankfully, his dream was shattered by Saitama.
When Gouketsu offered Choze a monster cell, the latter consumed it without any hesitation. The transformation into a monster bolstered Choze’s physical abilities, allowing him to compete against Suiryu. However, Suiryu’s superior skills helped him bridge the gap and defeat Choze.
2Marugori
Originally a human, Marugori became a monster after consuming the steroids created by his older brother. Marugori went from being an ordinary-sized human to a giant that dwarfed even the tallest buildings.
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Along with the increase in size, the steroids also increased Marugori’s strength drastically. With just a single punch, Marugori was able to send shockwaves through an entire city. While the Hero Association classified him threat-level Demon, they would have been forced to change it to Dragonif Saitama had not intervened.
1Bug God
Bug God was a memberof the Monster Associationwho was sent to observe Garou along with Royal Ripper. When things didn’t go according to plan, Bug God was forced to fight the Hero Hunter, and he managed to overwhelm him quite easily. His punches were so powerful that Garou had to block them with two hands.
Bug God’s other physical attributes were also impressive. His speed and reflexes made it almost impossible for Garou to do any significant damage. After his transformation, Bug God’s power increased further, but he still could not defeat Superalloy Darkshine.
