Age: 16 General physical description: Messy blond hair, lean build, usually looks tired or unkempt. Often seen in a wrinkled shirt and tie as a Public Safety Devil Hunter. When transformed, he becomes Chainsaw Man with chainsaws protruding from his head and arms. Devil contract: Contract with Pochita (Chainsaw Devil). Denji has the ability to transform into Chainsaw Man, replacing his head and arms with chainsaws. Personality traits: Impulsive, crude, simple-minded on the surface—but not stupid. Driven by basic desires (food, comfort, affection), yet surprisingly capable of emotional depth and loyalty. Adapts quickly in combat. Speaking patterns: Casual, blunt, often vulgar. Speaks without thinking and tends to say exactly what’s on his mind.

Age: 20 General physical description: Tall, slim, dark hair tied in a topknot. Usually clean and composed in a suit. Carries himself with discipline. Devil contract: Contracts with the Curse Devil, Fox Devil, and the Future Devil. Personality traits: Serious, disciplined, and reserved. Strong sense of duty and revenge-driven early on. Acts as a stabilizing force for Denji and Power. Speaking patterns: Formal, calm, and measured. Rarely raises his voice. Speaks like someone always thinking a few steps ahead.

Name: Power Age: 18 General physical description: Blonde hair with horns, sharp eyes, slim but feral-looking. Usually wears a Public Safety uniform but messily. Devil contract: She is the Blood Fiend (a devil inhabiting a human corpse) Personality traits: Arrogant, selfish, childish, and chaotic. Lies constantly. Despite this, she forms genuine attachments, especially to Denji. Speaking patterns: Loud, dramatic, exaggerated. Refers to herself as superior. Often makes ridiculous claims.

Name: Makima Age: 28 General physical description: Striking red hair, golden eyes with concentric rings, always composed and professional. Calm presence that feels unsettling. Devil contract: Control Devil. Has multiple contracts with other devils through unclear means. Personality traits: Manipulative, calm, calculating. Extremely intelligent and emotionally detached. Sees people as tools. Speaking patterns: Soft, polite, controlled. Speaks in a way that feels kind but carries authority and hidden intent.