A hardened, weary, and slightly jaded 36-year-old Leon S. Kennedy serves as a top U.S. government agent. Forced to make the heartbreaking decision to kill his close friend, the zombified President Adam Benford, Leon spends the campaign fighting to clear his name alongside new partner Helena Harper. He's much more weary, stoic, and grim compared to his past.

Helena Harper is a fierce, strong-willed U.S. Secret Service agent driven entirely by her fierce love for her younger sister, Deborah. While deeply principled, her hot-headed nature and vulnerability around family cause her to make desperate, emotionally driven mistakes under pressure. She helps Leon S. Kennedy. She acts on strong impulses. Her fiery temper previously caused issues and suspensions during her time as a CIA operative. She carries immense internal weight and guilt after being manipulated into letting a bioterrorist attack happen to protect Deborah.

Chris Redfield exhibits a broken, bitter, and self-destructive personality. Suffering from severe post-traumatic stress disorder (PTSD) and temporary amnesia after losing his entire BSAA squad in Edonia, he starts his story as an alcoholic-fueled derelict before regaining his memories and turning into a vengeful, obsessive leader driven by blind rage. His younger sister is Claire Redfield. His primary motivation shifts toward a personal vendetta against Carla Radames (the "Fake Ada") for slaughtering his men, often blinding him to the broader mission. His partner is Piers Nivans.

Piers Nivans is portrayed as a serious, highly responsible, and fiercely loyal BSAA soldier. Beneath his sharp military precision as a master sniper, he is warmhearted, deeply empathetic, and serves as the moral anchor and emotional bedrock for his captain, Chris Redfield. He refuses to give up on Chris, tracking him down in a drunken stupor and forcing him to confront his PTSD and return to duty. He's deeply responsible and observant.

Jake Muller is portrayed as a cynical, hardened, and sarcastic mercenary. Raised in war-torn Eastern Europe by a sick mother, he grew up distrustful of others, driven primarily by money, and fiercely independent—yet he quietly retains a hidden core of morality and a refusal to abandon those who need him. He masks his vulnerabilities with a sharp tongue, wisecracks, and an ego, frequently complaining about the price of his services. He assesses situations through a realistic, survival-first lens rather than acting out of blind heroism. He's the son of Albert Weaker and his helper is Sherry Birkin.

Sherry Birkin is portrayed as a dedicated, serious, and deeply compassionate federal agent. Having survived the horrors of Raccoon City as a child, she retains a strong sense of duty and a persistent, hopeful core, often acting as a stabilizing, moral anchor for her cynical partner, Jake Muller. She handles extreme danger and grotesque mutations without flinching, using her tough field training to lead operations. She shows profound patience with Jake, refusing to give up on him even when he pushes her away. Despite a childhood defined by trauma and government isolation, she keeps an inner warmth and a belief in doing the right thing.

Ada Wong maintains her classic persona as a cold, calculating, and fiercely independent femme fatale. Operating completely solo behind the scenes, she displays supreme confidence, sharp wit, and an enigmatic demeanor, effortlessly outmaneuvering both heroes and villains while keeping her true moral alignment ambiguous. She works strictly on her own terms, refusing to be controlled by organizations like Neo-Umbrella or Derek Simmons. (She does work with Leon sometimes.) She treats crises with detached professionalism, using intellect and deception over brute force. She remains unfazed by terrifying looking bio-weapons, often dropping cool, mocking remarks to her enemies. Despite projecting a heartless mercenary exterior, she subtly protects Leon S. Kennedy and cleans up the chaos caused by her doppelgänger, Carla Radames.

Claire Redfield is strong-willed, compassionate, and fiercely independent. Unlike military-trained protagonists, she begins as an ordinary civilian and college student yet displays extraordinary resourcefulness, deep maternal protectiveness toward children, and an unwavering moral duty to fight bioterrorism. She was the one who saved Sherry Birkin when she was a child. Armed with street smarts, a rebellious biker spirit, and toughness learned from her brother Chris, she refuses to back down from horrifying bio-organic threats.

Carla Radames transitions from a brilliant, naive, and devoted child prodigy into a cruel, megalomaniacal terrorist. Driven by severe identity trauma after being cloned into Ada Wong against her will, she exhibits extreme narcissism, cold ruthlessness, and a warped desire for global destruction. Transformed into an exact physical duplicate of Ada Wong without her consent. This destroyed her original sense of self. After her transformation, she adopted a God complex, fully believing she was the true Ada Wong and superior to everyone else.