Deep Sea King - One Punch Man

The Deep Sea King (深海王, Shinkaiō) was the ruler of the Seafolk. He was killed by Saitama.

He is the main antagonist of the Sea Monster Arc.

Appearance

In his dry form, the Deep Sea King was the most humanoid of all the Seafolk. He was a large, muscular being with dark-green skin on his arms, legs, and back and light skin on his chest and abdomen. He had sharp eyes, large fangs, and fins protruding from either side of his head. In place of eyebrows were small pink ovals. His attire consisted of a red speedo, an ornate crown, and a large fur-trimmed cape fastened in front with a fish-head-shaped clasp. He had heart nipples.

The Deep Sea King's hydrated form was much larger and imposing. He developed a dorsal fin running the length of his back and grew fins on his forearms and shoulders, and the fins on the side of his face grew larger. His skin turned aquamarine, and his face lost its humanoid appearance and became larger and more monstrous.

Personality

The Deep Sea King was a sadistic individual who enjoyed starting fights and inflicting pain upon others. He was determined to take the earth's surface for himself to rule. He regarded people as little more than food and had no qualms about treating them as such. He was also very arrogant and prideful, considering himself to be a superior being that stood atop the pyramid that consists of every living organism on the planet.

Abilities and Powers

The Deep Sea King was a very powerful Mysterious Being, able to fight on par with and defeat a few S-Class heroes, albeit low-ranked ones. Puri-Puri Prisoner, the lowest-ranked S-Class Hero, was no match for the Sea King. However, according to the VGS (Virtual Genocide System), Deep Sea King in the rain would be defeated in two attacks by Genos who has upgraded himself after his defeat against the Sea King. Additionally, after his training, Puri-Puri Prisoner could eliminate a monster as strong as Deep Sea King with a single string of punches with killing intent behind them, while Superalloy Darkshine can destroy a monster as strong as Deep Sea King with just a light touch. Zombieman, however, would've had trouble in defeating a monster like him. The Deep Sea King is on the same level as the Subterranean King and the Sky King. 

Physical Abilities

Water Empowerment: When his body is hydrated enough, Deep Sea King changes to his "natural form" (真の姿, Shin No Sugata). In this form, he is much larger and more monstrous. However, certain attacks (like those delivered by Genos) or long periods of dryness cause him to exit this form.

Immense Strength: The Deep Sea King boasts an extreme amount of strength seen as how he was able to dispatch two A-Class heroes with minimum effort. In his weakened state, he is able to greatly damage and send Puri-Puri Prisoner, an S-Class hero, flying towards a building a great distance away. He was even able to tear apart Genos's cybernetic body. However, in his dry form, he was unable to land any decisive blows on Genos, despite the hero only having one arm, until he used his acid spit.

Body Moray (体内ウツボ, Tainai Utsubo): He can release a long eel-like creature from his mouth that he can use to bite and tear into opponents with. According to the Deep Sea King, the creature will not go away once it latches onto his enemies. Its full capabilities are unknown, and its maximum length is also unknown.

Immense Durability: The Deep Sea King has incredible physical might, being able to easily withstand the attacks of several heroes ranging from C-Class to S-Class with little damage, despite them occurring one after another with little rest in between. In his dry state, he is able to tank the powerful strikes of the S-Class Hero, Puri-Puri Prisoner, head on without taking much visible damage, alongside the attacks of Speed-o'-Sound Sonic (an S-Class Villain) and the S-Class hero, Genos. Even after having his Moray cut off, he showed no visible signs of pain.

Immense Speed and Reflexes: The Deep Sea King boasts an exceptional amount of raw speed, seen when he was able to appear behind Lightning Max instantaneously, catching the A-Class hero off-guard and struck Stinger (another A-Class Hero) before the latter could react. However, he was shown to be outmatched against Sonic in terms of speed and could not land a proper hit on the ninja until he entered his true form. Along with this, his dry form was shown to be about on par, if not slightly below, the level of Genos.

Regeneration: While shown to be highly resistant to attacks, the Deep Sea King is capable of recovering from his injuries at an extreme rate, as seen when an injury he received from Genos, an S-Class hero, healed while they were still fighting. However, this ability does have limits, as a powerful blow can kill him before he has the chance to regenerate.

Acid Spit (溶解液, Yōkai-eki): The Deep Sea King could shoot acidic spit from his mouth. It was able to melt Genos's metallic body almost completely. The spit is a lysis solution that also breaks down the membrane of cells.

Enhanced Senses: Deep Sea King appeared to be able to sense people's presence in every direction, even if distant.

Fighting Style

Expert Hand-to-Hand Combatant: The Deep Sea King was shown to be a very skilled combatant capable of defeating two S-Class heroes, and seemed to have lots of combat experience, as seen when he lectured Puri-Puri Prisoner on how to fight properly, by putting much more effort into attacking an opponent with more intent to kill. He also seemed to have a preference for combo attacks, attacking his opponents mostly with a barrage of punches.