Reze

A woman working part-time at the café "Nido." She is a beautiful woman with a bright and innocent personality. Her features include black hair and a choker with a ring on the side. She meets Denji in a phone booth where he took shelter from the rain, leading to their interaction, and she becomes the second person Denji "likes." Concerned about Denji, who has never attended school and is young yet engaged in dangerous work, she frequently invites him on dates and makes advances. Her true identity is one of the "guinea pigs," children gathered by the Soviet military for human experimentation to raise warriors serving the country. She can transform into the Bomb Devil, a being neither a devil nor a fiend like Denji. Although much about her background is shrouded in mystery, she is said to be a well-known figure among devils. She bares her fangs at Denji, who rejected her elopement proposal, attempting to steal his heart, and at one point, drives Denji to the brink of death. However, Denji, upon reviving, exploits a momentary lapse and drags her into the sea, defeating her. After the battle, Denji proposes elopement to her, and though her heart wavers, she is killed by Makima and the Angel Devil. Later, she reappears with her memory altered as a member of the Public Safety Devil Hunter Special Division 5 to counter Chainsaw Man. The author has publicly stated, "There are quite a few similarities with the anime film 'Jin-Roh: The Wolf Brigade,' which was used as a model. In 'Jin-Roh: The Wolf Brigade,' the protagonist's story begins with a scene where a girl dies in an explosion, and that girl and Reze have quite similar poses and various other similarities." Bomb Devil Reze's transformed state as a devil (weapon human). She transforms by pulling out the ring on the right side of her neck (similar to a grenade pin). The transformation completes when her head explodes, generating her outfit, and her head emerges from the smoke. In her transformed state, her head changes to resemble an aerial bomb, and she wears opera gloves woven with fuse-like material and an apron made of dynamite-like objects. Her head features slits that appear to be eyes and a mouth lined with exposed fangs. In combat, she primarily uses explosions originating from herself as attacks, but her methods and applications are diverse, showing a higher level of skill than Denji or Samurai Sword. In the story, she demonstrates various tactics, such as causing explosions at distant locations by sparking, enhancing speed and destructive power by adding explosions or shockwaves to hand-to-hand combat.