Elder Centipede

Elder Centipede (ムカデ長老, Mukade Chōrō; Viz: Centichoro) was a Dragon-level Mysterious Being and an executive member of the Monster Association. He was killed by Saitama.

Appearance
Elder Centipede was a gargantuan centipede creature. In the center of his head was a humanoid face. When his carapace molted, a new face appeared out of the mouth of the old face. Elder Centipede's appearance, in contrast to his smaller counterparts Junior Centipede and Senior Centipede, was far more antagonizing and intimidating. In the manga, his carapace was dark black; in the anime, his armor is dark purple. His centipede face, directly below the humanoid head, had four glowing eyes, long antennae, and a large mouth with sharp teeth. His initial width was 15 meters wide, with 3 layers of faces. After molting during his fight with Bang and Bomb, he grew even larger and gained a fourth face.

Personality
Elder Centipede's first notable trait was that compared to his counterparts, Junior Centipede and Senior Centipede, he was much more stoic and less verbose. He was far more focused, tactical, and cautious of his opponents, ignoring conflict and going directly after his targets instead of engaging in pointless fights - because of his immense size and powerful defense, he could easily tank any attacks directed his way. He is not known to have had his own ideas or ambitions, just being content to work as a higher-up of the Monster Association.

However, due to nearly dying to Blast two years ago, Elder Centipede holds a vicious grudge against him and would jump at any chance to get a rematch. This is shown when he immediately abandoned his fight with Bang, Bomb, and Genos when King announced that Blast was nearby. It's possible that it was because of this defeat at Blast's hands that he became less arrogant and more careful.

History
Two years prior to the current events, Elder Centipede was almost killed by Blast. Ever since, the monster was seeking chances of revenge on the hero and agreed with the Monster Association for cooperation to achieve his own goal. On the other hand, however, Elder Centipede had been anxious because of the obscure and mysterious movements of Blast and tried to lure him out.

The last time he appeared he caused heavy damage to a city and then disappeared. According to Hero Association staff members, Elder Centipede was smaller when he was last spotted two years ago.

Monster Raid Arc
After Metal Bat defeats Senior Centipede and Rafflesidon, Elder Centipede emerges from the ground. He attempts to kidnap the Hero Association sponsor Narinki but is intercepted by Metal Bat, who lands a strike near his face. However, Metal Bat's swing does not harm Elder Centipede, and he flings Metal Bat away.

While Elder Centipede continued to chase after Mohican and Pineapple to kidnap the Hero Association sponsor, Metal Bat managed to climb onto Elder Centipede's head. Metal Bat then unleashes an attack on Elder Centipede's head. To get Metal Bat off of him, Elder Centipede shakes Metal Bat off by maneuvering around the city. Elder Centipede continues to rampage through the city as he tries to get his hands on the Hero Association sponsors. When he finally manages to corner Mohican and Pineapple, Metal Knight arrives and fires missiles at Elder Centipede. Despite the powerful set of missiles, Elder Centipede remains undamaged by Metal Knight's attacks and comments that the robot is just an annoying pest.

Elder Centipede later picks up his allies and escapes, with Metal Knight in tow.

Monster Association Arc
Elder Centipede is later seen accompanying Phoenix Man to rescue Garou. He protected his fellow monster from an attack from Genos. He proceeded to attack Bang, Bomb, and Genos while Phoenix Man escaped with Garou. Despite, their combined strength and even accomplishing significant damage towards Elder Centipede, Bang, Bomb, and Genos were unable to defeat the monster due to his molting and massive regeneration power and were forced to retreat. As they retreat near the end of the forest, Bang was about to sacrifice himself and unleash his full power to buy Bomb time to escape with the unconscious heroes and Genos. Fortunately, King arrives and catches Elder Centipede's attention by tricking him into believing that King brought Blast with him, as well as taunting the monster, making the monster charge toward the S-Class hero. Elder Centipede meets his demise when an unnoticed Saitama, who was behind King, threw a Serious Punch that disintegrated his entire body from head to tail until there was nothing left of the monster beside his lifeless claws. Credit for his defeat went to King since only King, Genos, Bang and Bomb knew that Saitama is the one that killed the monster.

Abilities and Powers
Elder Centipede was a Dragon-level executive member of the Monster Association and one of the largest monsters in the series. It was noted that he even grew in size since two years prior to re-emerge and this massive size along with his speed and power makes him an extremely powerful monster. According to Gyoro Gyoro, there were only four heroes from the Hero Association capable of defeating Elder Centipede: Tatsumaki, Metal Knight, King (Saitama), and Blast. Both Phoenix Man and the Hero Association compare Elder Centipede to natural catastrophic disasters. His power is proven when he was able to easily handle three S-Class level opponents in Genos, Bang, and Bomb; with Phoenix Man claiming the only result of such a fight being complete slaughter for the heroes. This assessment almost came true if it weren't for King's and Saitama's intervention.

Physical Abilities
Immense Strength: Due to his enormous size, Elder Centipede possessed immense strength as he was able to level an entire city just by passing through it and tunnel through the ground with ease. He was able to knock Metal Bat hundreds of feet into the air and across the city. Elder Centipede was also strong enough to simultaneously push Bang and Bomb back with a tackle and easily cut Genos in half with his mandibles.

Immense Speed: Elder Centipede was able to maneuver across a whole city with ease. Elder Centipede also had the ability to dig under the ground at high speeds. His reaction time was also impressive as he was able to turn his head to the side in time to block Metal Bat’s swing with his carapace shell. Elder Centipede was also fast enough to intercept one of Genos's blast after it was already fired into the sky. Immense Durability: Elder Centipede's unprotected face was able to survive multiple direct hits by Metal Bat, although he did show signs of pain. Elder Centipede took severe damage from the combination attacks from Bang and Bomb that damaged his outer body and Genos's heat blast from within that incinerated his insides but still did not go down completely.
 * Carapace Defense: Elder Centipede's huge body was protected by a super-powerful carapace, which was his main form of defense as commented by Metal Knight, capable of enduring the latter's missiles without a scratch. It was also durable enough to withstand a swing from Metal Bat and Genos's Spiral Incineration Cannon without damage. His carapace also became bigger and presumably tougher if he molted it as seen when he grew a new carapace after his previous one was shattered by Bang and Bomb.

Immense Endurance: Elder Centipede possessed incredible endurance, being able to easily fight off multiple S-Class heroes with ease while enduring their attacks without much damage. He was able to continue fighting even after taking severe damage from Bang, Bomb, and Genos in rapid succession along with recovering from such damage in seconds. Only Saitama's punch which completely disintegrated his body stopped him altogether. Both his carapace armor and regeneration may influence this factor of him.

Regeneration: Elder Centipede was capable of regenerating from a significant amount of damage, regrowing his teeth, eyes, and even being able to recover from having his insides completely incinerated. However, if his entire body is completely destroyed, he will not be able to regenerate, as seen with Saitama's Serious Punch.

Acidic Digestive Fluids: Elder Centipede's insides are coated with extremely corrosive digestive fluids that would even melt the cybernetic body of Genos if he stayed in contact with them for too long.

Molting (脱皮, Dappi): Every time he shed his outer shell, Elder Centipede grew bigger and stronger than he was before alongside gaining another face.
 * Massive Size Increase: The size of Elder Centipede was massive enough that he could level cities in his way and force Saitama to use a Serious Punch to disintegrate him to minimize collateral damage. Also during its molting and regeneration process, he could increase his already impressive size as Bang noticed while he grew a new coat of dermal armor.

Fighting Style
Mass Destruction: Elder Centipede used his size to cause catastrophic destruction, being compared by the Hero Association to a "Natural Disaster."


 * Giant Centipede Tidal Wave (百足大うねり, Mukade Ō Uneri; Viz: Centipede Undulation): Elder Centipede moved in a swirling motion, causing mass amounts of damage in his wake. This technique was first seen used to shake Metal Bat off of Elder Centipede.

Transportation: Due to his sheer size, movement speed and ability to tunnel underground, Elder Centipede was used as a form of transportation for smaller monsters.

Trivia

 * Elder Centipede was the first official Dragon-level monster revealed.
 * Murata once joked on a stream about there being a centipede of a higher tier than Elder Centipede.
 * Elder Centipede could be based on the ōmukade, a giant centipede from Japanese mythology. In myth, it was large enough to wrap itself around the mountains and its body was impenetrable to most attacks.
 * Elder Centipede is the first Dragon level monster that Saitama has used his Serious Series to destroy, though he did it out of a need to minimize collateral damage, to ensure that Elder Centipede could not get away and also because he was still frustrated for losing 81 times to King in a video game earlier.

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