Wow... even Gemini failed to find any real examples. Instead, it found literally just a bunch of undead people from commedies.

And HALF OF THEM WERE STILL MEN :D

​1. Lisa Swallows — Lisa Frankenstein (2024)
​The Yandere Behavior: Lisa (Kathryn Newton) is an outcast high school girl who reanimates a Victorian corpse. When her undead boyfriend needs missing body parts to become fully human, Lisa doesn't hesitate—she casually commits murder (targeting her abusive stepmother and creepy peers) to harvest their organs and limbs for him.
​Why She's "Positive": The movie is a 1980s-stylized dark horror-comedy, but Lisa is unequivocally the protagonist. Her murderous, unhinged devotion to her reanimated lover is framed as empowering, romantic, and sweet, ultimately giving them a quirky "happily ever after."
​2. Edward Cullen — The Twilight Saga (2008–2012)
​The Yandere Behavior: Edward exhibits textbook Yandere traits: he sneaks into Bella’s bedroom to watch her sleep without her knowledge, stalks her across state lines, physically disables her truck so she can't visit a romantic rival (Jacob), and harbored intense homicidal urges toward anyone who looked at her wrong.
​Why He's "Positive": The entire franchise frames every single one of these deeply possessive, stalker-like behaviors not as red flags, but as the absolute pinnacle of chivalry, eternal devotion, and romantic protection.
​3. Martha & Francis — Mr. Right (2015)
​The Yandere Behavior: Francis (Sam Rockwell) is a hitman who kills the people hiring him. When Martha (Anna Kendrick) starts dating him, instead of being horrified by his extreme lethality, she embraces his chaotic energy. She becomes intensely devoted to him, matches his crazy, and brutally kills his enemies to save his life.
​Why They're "Positive": They are the lovable, quirky leads of a romantic action-comedy. Their mutual, blood-soaked obsession with protecting one another is presented as the foundation of a healthy, hilarious relationship.
​4. R — Warm Bodies (2013)
​The Yandere Behavior: After eating her boyfriend's brain (and inheriting his memories/feelings), R—a zombie—becomes instantly fixated on Julie. He "kidnaps" her, hoards her inside an abandoned airplane, keeps her isolated from the world, and slaughters other zombies to keep her exclusively safe with him.
​Why He's "Positive": His stalkerish, hoard-and-protect zombie instincts are framed as the literal cure for the zombie apocalypse and the heart of a wholesome, sweet teen romance.
​5. Wade Wilson — Deadpool (2016)
​The Yandere Behavior: Wade’s entire driving force is an unhinged, violent fixation on his fiancée, Vanessa. After being disfigured, he stalks her from afar out of insecurity, and then slaughters an entire criminal syndicate in a bloodbath just to get back to her.
​Why He's "Positive": Wade is the movie's beloved antihero, and his body-count-accumulating obsession with Vanessa is treated as genuinely heartwarming and romantic.