Puri-Puri Prisoner serves as S-Class Rank 17 hero for the Hero Association while concurrently incarcerated in Smelly Lid Prison under a 10,000-year sentence for sexual harassment and rape of men. His presence alone deters prison escapes due to inmate fear. He frequently breaks confinement to perform heroic duties, always returning voluntarily afterward. His hero name was changed from an unspecified original. Childhood details are limited to swimming lessons. Physically, he stands 7'2.5" with a massive muscular build, a small afro, an unshaven face, and a distinctive "butt chin." His standard attire is a blue-and-white prison jumpsuit and a non-impeding ball and chain on his right leg. He initially wore a handmade pink heart sweater gifted by a prison boyfriend, destroyed during the Deep Sea King battle. His motivations focus on protecting men he deems physically attractive, calling them his "angels." He justifies targeting criminals by stating: "It's a crime to violate normal boys, but if it's a criminal boy, it's like I'm punishing him—killing two birds with one stone." Seeing these individuals endangered on television prompts his prison breaks for rescue missions. Post-mission, he consistently returns to incarceration. He visits injured heroes in hospitals, offering rejected advances and "Angel Shots" medication. Combat abilities include superhuman strength, speed, durability, and rapid mid-battle adaptation. Signature techniques are Angel Rush (rapid striking combo), Dark Angel Rush (deadlier version developed post-Deep Sea King), Angel Hug (embrace attack), Angel Dash (high-speed movement), and Angel Bristle Armor (defensive body hair growth). He endures diverse attacks like electricity, freezing, poison, and sonic waves. Mid-battle, he develops new abilities such as Vibration Angel (using pain tremors to enhance strikes) and Angel Crawl ("swimming" through solid matter via vibration and bristle armor). Notable combat engagements include: * Catching Lightning Max during J-City's Deep Sea King attack. Powering up to "half strength" destroyed his sweater and transformed him into Angel Style before defeat, despite landing blows. * Participating in the S-Class meeting during Boros's invasion, explaining seer Shibabawa to Saitama, and fighting alien Melzargard using Dark Angel Rush. * Defeating Demon-level monster Free Hugger with Angel Hug despite needle attacks, and later killing another monster comparable to Deep Sea King. * Leading the raid on the Monster Association headquarters: defeating absorption-type monster Baquma with Vibration Dark Angel Rush, surviving Dragon-level executive Nyan's attacks, and attempting to "rehabilitate" monsterized inmates through affection. * Discovering an imprisoned Garou, activating Angel Bristle Armor to withstand initial strikes, before decisive defeat requiring rescue by Superalloy Darkshine. During the Monster Association arc, he rescued Child Emperor from rubble using a hidden transmitter and located Atomic Samurai. He motivated a depressed Superalloy Darkshine by threatening to "deep kiss" him, prompting Darkshine's return to the surface battle. He assisted in transporting Genos and Tatsumaki to safety during King's confrontation. On the surface, he attacked fused Psykorochi with Vibration Dark Angel Rush alongside other S-Class heroes. In non-canon OVAs, he participated in a hot springs resort gathering, holding a muscle comparison contest among heroes. He was briefly suspected of murdering Zombieman before exoneration. Series creators provide capability statements: ONE stated Puri-Puri Prisoner could defeat the Giant Crow that crashed into King's apartment. Yusuke Murata confirmed a monster Puri-Puri Prisoner defeated in Chapter 94 possessed strength comparable to Deep Sea King.