Building Booper
CharacterBuilding Booper, also translated as Building Blaster, is a Demon-level monster tied to the Monster Association. Shaped like a walking detonator, he brings down entire buildings to trap the heroes storming the group's lair, until Saitama puts a stop to his rampage.
Appearance
Building Booper takes the form of a slim detonator given limbs, walking on legs and reaching with arms while a long electrical cable trails behind like a tail. A single eye sits above a hungry, beast-like mouth, and bands of black stripe the lower part of his detonator body.
Personality
A cruel streak runs through him. He gleefully levels the structures around the heroes who had broken into the Monster Association Headquarters, sealing off their exits and gloating that Orochi's tentacles would finish the job.
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History
Stationed in Z-City, Building Booper detonates explosives to topple buildings across the surface, cutting off the escape and resupply routes of the invading heroes. His end arrives when Saitama, Waganma, Child Emperor, and Underdog Man pool their strength to shove an exit manhole up beneath the two collapsed buildings he is perched on. The force flings him and the rubble skyward, and the long fall back down is what apparently kills him. His entire fighting method rests on this one trick: turning his own body into a detonator to set off massive, building-flattening blasts.
Frequently Asked Questions
Who is Building Booper?
Building Booper, also called Building Blaster, is a Demon-level monster affiliated with the Monster Association. Shaped like a walking detonator with a trailing electrical cable, he collapses buildings to trap invading heroes.
What does Building Booper look like?
Building Booper takes the form of a slender detonator with limbs, a long electrical cable trailing behind like a tail, a single eye, and a beast like mouth, with black stripes banding the lower half of his body.
How did Building Booper die?
Building Booper was killed when Saitama, Waganma, Child Emperor, and Underdog Man combined their strength to shove an exit manhole up beneath the two collapsed buildings he was perched on. The blast flung him and the rubble into the air, and the fall back down killed him.
What was Building Booper's role during the Monster Association raid?
During the heroes' raid on the Monster Association, Building Booper was stationed in Z-City where he detonated explosives to topple buildings, cutting off the escape and resupply routes of the invading heroes.
What is Building Booper's fighting style?
Building Booper's entire fighting method centers on turning his own body into a detonator, setting off massive blasts powerful enough to flatten buildings.
Sources & Information
Looking for more on Building Booper? 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:
- Movie pages: theatrical posters and key visuals, credited to J.C.Staff, Madhouse and Shueisha.
- Game pages: official box art, credited to the game's respective publishers.
- Manga chapter pages: volume covers, credited to Shueisha and ONE and Yusuke Murata.
Official resources:
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