Iaian is the 2nd ranked A-Class warrior and Disciple of S-Class Hero, Atomic Samurai. He along with the other 2 students of Atomic Samurai are all immensely powerful swordsmen. Each capable of being in S-Class, though are forced to stay in their current positions due to Sweet Mask being at Rank 1 of A Class.

When Melzalgald is rampaging throughout A City, Iaian decides to fight him. While he was able to demonstrate his true power and dealt damage to the alien, he was ultimately defeated. With Melzalgald ripping out his arm. Despite this, Iaian still remains as one of the association's mightiest heroes and is still determined to keep on fighting.

Powers and Stats

Tier: At least 7-B

Name: Iaian

Origin: One-Punch Man

Gender: Male

Age: 23

Classification: Swordsman, Superhero

Powers and Abilities: Superhuman Physical Characteristics, Expert Swordsman

Attack Potency: At least City level (Capable of slicing, slashing up and harming Melzalgald, though was ultimately outmatched by the monster. His power is at S-Class level and he's only at A-Class due to Sweet Mask.)

Speed: At least Massively Hypersonic+ (His speed is on par with other S-Classes. Dodged Melzalgald's casual attacks and caught him off guard)

Lifting Strength: Unknown

Striking Strength: At least City Class

Durability: At least City level (He's the toughest of Atomic Samurai's disciples, each of which are comparable to S-Class Heroes)

Stamina: Very High

Range: Extended melee range blade


Hissatsu no Iai as shown and described in the guidebook

Standard Equipment: Katana

Intelligence: Highly knowledgable in combat and is a master swordsman, unknown otherwise.

Weaknesses: Sometimes rushes into battle without thinking things all the way through. At the moment has one arm, but it is unknown if this affect his fighting skills.

Notable Attacks/Techniques:

  • Hissatsu no Iai: Also known as "Iai of Certain Kill," this technique is furious combination of various sword slashes and attacks known for its tremendous speed. With all strikes being thrown and the sword then placed back in its sheath within a very short timeframe.


Notable Victories:

Notable Losses:

Inconclusive Matches: