Protagonists: Chris Redfield | Leon S. Kennedy
Series canon: Resident Evil | Resident Evil 2 | Resident Evil 3: Nemesis | Code Veronica | Resident Evil 0 | Resident Evil 4 | Degeneration | Resident Evil 5 | Revelations | Damnation | Resident Evil 6 | Revelations 2 | Resident Evil 7: Biohazard | Vendetta | Village | Infinite Darkness
Spin-offs: Gun Survivor/DeadAim | Outbreak | The Umbrella Chronicles | The Darkside Chronicles | Operation Raccoon City
Other media: The Marhawa Desire | Heavenly Island
Tropes relating to the characters introduced in Resident Evil 0. For Rebecca Chambers, Albert Wesker and Enrico Marini check the Resident Evil sheet. For William Birkin check the Resident Evil 2 sheet.
A former Marine, Billy was sentenced to execution for the slaughter of 23 people in Africa. However, when his transport through the Arklay mountains was overrun by mutated leeches (No, seriously...), he escaped. He proceeded to team up with Rebecca Chambers, and the two investigated zombie filled trains and a research facility in the woods. He was last seen in the woods around the mansion area, and hasn't been heard from since.
- Chained by Fashion: He wears handcuffs throughout the game, dangling off of one wrist. He manages to pick them off by the end of the game, and he discards them by tossing them off of a cliff.
- Contrasting Sequel Main Character: He heavily contrasts the four (so far) canonical male protagonists in the games:
- Like Chris, he is a military man who fought for the right reasons, but whereas Chris will take reasonable orders, Billy refuses to kill anyone who isn't an enemy.
- Like Leon, he has a strong sense of justice and will help others. However Leon is a cop-turned secret agent, while Billy is a wrongly convicted man.
- While heavy with the snark factor, Jake is a mercenary Only in It for the Money who is a Jerk with a Heart of Gold, which initially gruff, Billy appears to be nicer than his appearance makes him.
- While Ethan contrasts all four men himself, Billy appears to know more than he should, while Ethan unknowingly gets himself into a situation where he has to fight to survive.
- Death Faked for You: By Rebecca, at the end of the game.
- Elites Are More Glamorous: Billy served in a Marine Force Reconnaissance unit.
- Hand Cannon: He makes use of the game's Magnum Revolver in the final cutscene, to land the killing blow to the Queen Leech. Since then it seems to be heavily associated with him, even being his main weapon in Resident Evil: The Umbrella Chronicles
- Hidden Depths: Despite how brutish he seems more often than not, he's remarkably good at playing the piano.
- Tip of the iceberg. When Rebecca finds him after he gets washed away, they come upon a pile of skeletons. Somehow Billy is aware that Marcus used them as test subjects for the Mother Virus. Someone knows a little more than they're letting on.
- Huge Guy, Tiny Girl: One of the brawniest male characters, partnered up with the smallest adult female character.
- Hunk: Absolutely.
- I Won't Say I'm Guilty: Granted, he's not.
- Jade-Colored Glasses: Billy is almost bizarrely aloof about his conviction, resigned to his fate, and cynically shoots down Rebecca when she tries to be optimistic about it. And yet...
- Knight in Sour Armor: ... The cynical, wrongfully convicted murderer has a powerful sense of justice. He's the one who convinces Rebecca to partner up with him and he's the one who refuses to go back on his word.
- The Nicknamer: To Rebecca.
- The Quiet One: Man of few words.
- Sequel Non-Entity: He's never heard from again after 0. Justified due to his circumstances.
- Semper Fi: An ex-Marine.
- Sleeves Are for Wimps: Wears a tank top to show off his tattoo.
- Tattooed Crook: Averted. He's the only convict among the series protagonists and has a very prominent tattoo, but Billy is a decent guy and not actually a criminal, and closer examination reveals that his tattoo reads, "Mother Love."
- What Happened to the Mouse?: Hasn't been seen or heard from since Zero. The only continuity nod is in Resident Evil 2, where Rebecca reported him dead.
- Where she misspells his surname as "Koen"...
One of Umbrella's three founding members along with Ozwell E. Spencer and Edward Ashford, the one who figured out how to make the Proginetor Virus into the T-Virus. He was murdered by Wesker and Birkin on Spencer's orders.
- Asshole Victim: After everything Marcus did, one simply can't feel bad for his undignified fate.
- Ax-Crazy: Being increasingly isolated from the world and resentful of Spencer, Marcus took to brutally torturing and experimenting on his own staff out of paranoia and seeing his t-virus infected leeches as "children."
- The Bad Guy Wins: Although Marcus wouldn't live to see it, his dark legacy would ensure every last person in Umbrella that crossed him would die as undignified as he did.
- Bad Boss: In his descent to madness, Marcus used dozens of Umbrella employees and trainees sent to him over Spencer as test subjects. This undoubtedly played a role in further falling out with Spencer and his eventual assassination.
- Bishounen: He was apparently one when he was younger.
- Corrupt Corporate Executive: Though he was more concerned with R&D than Spencer or Ashford.
- Dead All Along: Marcus died in 1988. Although Marcus seems to have come Back from the Dead for most of the game, it was actually his Queen Leech, having absorbed his memories from his corpse and taken his form, becoming delusional and thinking it was Marcus reborn.
- Doomed by Canon: Since he's a Posthumous Character that's not seen in other Resident Evil games.
- Evil Old Folks: Like all the original founders of Umbrella (except Ashford).
- Evilutionary Biologist: Possibly the worst of them all in Umbrella (and that's saying something), rivaled or possibly surpassed only by Lord Spencer.
- Greater-Scope Villain: Marcus was one of the first people who discovered the Progenitor Virus within an African flower. From there on, he created the T-Virus, which also lead to the creation of the virus' derivatives, the rise of B.O.W.s in warfare, and the destruction of Raccoon City.
- Laser-Guided Karma: Marcus had a habit of callously dumping the corpses of his unfortunate test subjects into the sewers. After being assassinated by his own pupils, his corpse was dumped into the same sewers.
- Mad Scientist: Like almost everyone involved with Umbrella. The medieval torture dungeons found in the training facility speak for themselves.
- The Paranoiac: Taken to Ax-Crazy extremes. As documents note, Marcus' insane paranoia is what led him to indiscriminately murder his workers, fearing the possibility of their siding with Spencer. Towards the end of his life, he expressed he only trusted Wesker and Birkin.
- Posthumous Character: Is long dead by the start of the game. Though he seems to have come back to life, the Marcus we see now is not actually the real person. Rather, it's the Queen Leech after absorbing his memories and taking his form.
- Predecessor Villain: He created the T-Virus, making him responsible for, at the very least, everything up to Raccoon City's destruction.
- The Only One I Trust: In the midst of the gulf formed between him and Spencer, Dr. Marcus expressed that the only two people he trusted in the world were Wesker and Birkin. Spencer would command them to assassinate Marcus.
- The Starscream: He plotted to overthrow Spencer as CEO of Umbrella during the height of their tensions.
- Villainous Legacy: He was the scientist who originally created the t-Virus by injecting the original Progenitor virus into leeches and extracting the mutated viral strain from them. The t-Virus would go on to play a crucial part in producing Umbrella Corporation's various Bio-Organic Weapons (B.O.W.s) (most notably Tyrants) and become a base for future weaponized viruses such as the t-Veronica virus, the t-Abyss virus and the t-Phobos virus. A variation of the t-Veronica virus became a base for the Chrysalid Virus (C-Virus).
- The Queen Leech, driven by the late Dr. Marcus' burning desire for revenge, caused the viral outbreaks at the Umbrella Executive Training Center and the Arklay Laboratory. After this, the villainous nature of the Umbrella Corporation was gradually exposed to the public, leading to the company's downfall years later. One could argue that the outbreaks also led to the ultimate failures and death of Spencer, the man responsible for Marcus' murder.
- Dr. Marcus' creation of the t-Virus and the decline of the Umbrella Corporation are two of the most important reasons why the bio-weapons Black Market was created. In a sense, Dr. Marcus is, even now, the biggest reason why Genetic Engineering is the New Nuke in the world of Resident Evil.
- Unperson: Following his assassination, Marcus was practically erased from Umbrella history to hide the conspiracy against him.
- Wicked Cultured: If the Queen Leech's impersonation is anything to go by, Marcus was a talented opera singer.
- Would Hurt a Child: The trainees he butchered for his experiments were all child prodigies or teenagers at most.
A young man in strange clothes that causes the mutated leech outbreak on the Ecliptic Express. He claims to be Dr. Marcus reborn and wants to destroy Umbrella.
- Achilles' Heel: His weakness to sunlight is what gives Rebecca and Billy the chance to survive.
- Back from the Dead: Subverted. The Queen Leech thinks it is Marcus reborn, but it actually just absorbed his memories from his corpse and has the ability to take his form. All thanks to some T-Virus infected leeches.
- Big Bad: Of Resident Evil 0.
- Bishounen: Presumably, the first time we see the Leech Queen it's impersonating the younger Dr. Marcus. Stops being the case after showing its hideous true form.
- Body Horror: The transformation from "younger Dr. Marcus" to "Queen Leech" isn't exactly pretty, to say the least.
- Dead Person Impersonation: What seems to be a younger Dr. Marcus is actually the Queen Leech impersonating him. The real Dr. Marcus is long dead, and absorbed by his own creation.
- Eviler Than Thou: First inverted, then Played Straight. When Spencer thought Dr. Marcus pretended to become The Starscream, he had Wesker and Birkin send a strike team to kill him and destroy his research. His Queen Leech survived, however, and its actions led to Umbrella's sudden downfall.
- Gone Horribly Right: He wanted to see the world burn after taking care of Umbrella. While dying put a stop to his plans, he did not need to do anything, as Umbrella's downfall happened because the world started burning.
- The Heavy: For RE0, overlapping with his status as Big Bad.
- Hive Mind: All leeches obey his commands, more often than not through an opera song.
- Humanoid Abomination: It's actually a grotesque T-Virus parasite taking human form.
- I Am Legion
- Non-Standard Character Design: Downplayed. As it's not unusual for Resident Evil to have Pretty Boy character designs, as Leon is an example of that type of design, but his outfit combined with his overall appearance makes him look more like a Final Fantasy character than a Resident Evil one.
- Omnicidal Maniac: Planned to destroy the entire world after it was done with Umbrella.
- One-Winged Angel: His Leech Queen form.
- Predecessor Villain: Directly responsible for the Mansion incident due to the Leeches attacking Umbrella personnel, and indirectly to Raccoon City's destruction.
- Revenge: His motivation is revenge on Spencer, Birkin, Wesker, and Umbrella as a whole.
- The Undead: Naturally subverted. The real James Marcus is long dead, and the one that seems to be his younger self is actually the Leech Queen, having absorbed him after being left for dead.
- Voice of the Legion
- Weakened by the Light: In the dark, the Queen Leech is implacable. After being exposed to sunlight, it is neutralized in a single shot.
- Weaksauce Weakness: Sunlight.
- The Worm That Walks: Composed of thousands of leeches.
- Villainous Legacy: Long after the Queen's death, its wish to bring down Umbrella eventually comes true in 2003.
Umbrella's first semi-successful attempt at making a super soldier. Despite its primitive design in comparison to later B.O.W.s, it nonetheless demonstrated the "bare ferocity" that earned its series the name "Tyrant". During the experiment, the t-Virus' negative effects were found to be too potent, resulting in such deformities as the skin essentially "exfoliating". This led to the decision to discontinue the Tyrant's development.
- Attack Its Weak Point: Played Straight. Attacking its exposed heart or exposed spine deals massive damage to the creature.
- Awesome, but Impractical: Tyrants as a whole zigzag on this. They're extremely difficult to create, as only one in about ten million people have the genetic compatibility with the T-Virus to become Tyrants upon infection. However, they are extremely powerful creatures, and once Umbrella develops cloning technology, they really become a viable creature.
- Body Horror: It has a skull-like face with lip- and cheek-less jaws, a twisted claw for a hand, lesions all over its skin, a huge exposed heart beating on the outside of its chest, and its spine is exposed through its back. Although fans had long speculated that the heart had been forced out of the chest by the mutation process, it was eventually stated by Word of God that the heart was actually an external graft, and in fact it has three hearts to cope with the demands of its body.
- Flawed Prototype: It is the first model of tyrant developed and suffers several design flaws not seen in later models. While it has many of the benefits, such as increased musculature, a claw like arm, and the ability to regenerate severe battle damage, it also has more exposed weakpoints. Its grafted heart is more exposed to gunfire, and a flaw in its nervous system has left its spine exposed (creating an additional weakness) and causes it to twitch erratically. Also, unlike most other Tyrants in the series, you ultimately defeat it simply by shooting it a lot instead of having to resort to some form of special super weapon (though Umbrella Chronicles reveals it did recover after your last fight with it, in typical Tyrant fashion, and you simply didn't encounter it afterwards until the base blew up).
- Flipping the Bird: Its middle finger on its right arm has mutated into the largest claw it has, making it appear to be constantly flipping you off.
- Healing Factor: A benefit of its genetic compatibility with the t-Virus. It can regenerate extensive battle damage very quickly. Often getting back up mere seconds after falling in combat.
- Mighty Glacier: It's slow and lumbering, but it's incredibly tough, as mentioned above. Although it is not as tough as its successors.
- Turned Against Their Masters: It attacks Wesker on an elevator in the factory.
- Unflinching Walk: Stalks menacingly towards the player, shrugging off shots all the while.
- Wolverine Claws: Its iconic mutated limb is a mass of sword-like clawed fingers.
- Worf Had the Flu: Despite getting beaten down by Rebecca and Billy twice, it challenges Wesker to a fight. Wesker effortlessly kills the Tyrant.
- You Have Outlived Your Usefulness: Wesker states similar when the Proto-Tyrant attacks him. Amusingly stating "What do we have here? You were supposed to be disposed of."
Bravo Team's helicopter pilot. After the accident that forced their emergency landing, Kevin stayed behind to fix the chopper and wait for rescue. By the time Alpha Team arrived, he'd had an unfortunate encounter with a pack of Cerberus.
- Elites Are More Glamorous: Averted. Unlike the rest of Bravo Team, Kevin wasn't a member of S.T.A.R.S.. He was just a regular RPD pilot on loan to them so Edward wouldn't have to pilot the chopper.
- Retcon: He didn't exist in the original Resident Evil, as the mutilated hand found by Joseph Frost belongs to Edward Dewey. Following the plot changes in 0, Kevin was created to take Edward's place as the body found by Alpha Team in the RE1 remake intro.
- The Speechless: He doesn't say anything in his brief appearance.
- We Hardly Knew Ye: He only appears alive briefly in the intro of 0. The next time we see him, it's as a mutilated corpse in the intro of the RE1 remake.