
Exma is a stern executive inside the Hero Association who serves as deputy chief of its Hero Disciplinary Supervision Division. Her merciless approach to whipping weaker heroes into shape has earned her the dreaded nickname Demon Instructor.
A blue tattoo sits beneath her right eye and a small mole rests below her mouth, the two marks that set her apart most. She keeps her black hair short and glossy, pairs pale blue eyes with a polished, self-assured air, and dresses in a red shirt under a black blazer. A beaded choker and dark studs round out the look.
Composed yet commanding, she never steps out of the role she occupies. Heroes dread her because of the harsh, unforgiving way she drills the weaker ranks, the reputation that won her the Demon Instructor title. Notably, she carries no special powers of her own.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
She turns up at a Hero Association meeting reviewing a hero report, remarking that the organization drew heavy criticism after Marugori's rampage across B-City and D-City. When the Monster Association seizes Waganma, she sits in on the emergency session and backs the plan to recover the hostage, only for Destrochloridium to hijack a staffer's corpse and disrupt the room before Superalloy Darkshine arrives to destroy it.
In the Big Promotion extra chapter, the assessor Cautous calls her in and notes how notorious her strictness has become. She owns it plainly, observing that heroes below S-Class can be disciplined in plenty of ways, and when Cautous lets slip that some have complained about her, she coolly asks for their names and vows to find them out regardless.
Exma is a stern executive inside the Hero Association who serves as deputy chief of its Hero Disciplinary Supervision Division.
Exma serves as deputy chief of the Hero Disciplinary Supervision Division, a role in which she reviews hero reports and sits in on emergency sessions such as the one called after Waganma is seized by the Monster Association.
Exma earned the dreaded nickname Demon Instructor for the harsh, unforgiving way she drills heroes ranked below S-Class to whip them into shape.
No, Exma carries no special powers of her own; her authority comes from her position as a Hero Association executive rather than any combat ability.
When the Monster Association seizes Waganma, Exma sits in on the emergency session and backs the plan to recover the hostage, until Destrochloridium hijacks a staffer's corpse and disrupts the room before Superalloy Darkshine arrives to destroy it.
Looking for more on Exma? The One-Punch Man Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the One-Punch Man anime series, manga, and official materials. One-Punch Man was created by ONE and Yusuke Murata, published by Shueisha, and animated by J.C.Staff and Madhouse. All rights to One-Punch Man and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
Rights holders
All rights belong to their respective owners.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
Official resources:
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.