I saw a TikTok video recently about serial killers and their zodiac signs. I’ve been into astrology for over 10 years, but it never occurred to me to look at what serial killers might have in common, including their birth signs. This video got my attention, though, because it seemed like most of the serial killers were Pisces, Gemini, or Virgo signs.
The interesting thing is that all three signs are mutable. They also all represent some kind of duality. For example, Geminis are represented by twins. Pisces are two fish. And Virgo, while just one virgin, is ruled by the planet Mercury, which represents communication and duality.
Notable Serial Killers & Their Zodiac Signs
It can be interesting to look at the zodiac signs of some famous serial killers, even though astrology shouldn’t be used to explain their crimes. When talking about signs, we’re really just talking about their sun signs. That doesn’t tell the whole story. But it may show some patterns.
People have ideas about what sign the “Zodiac Killer” had based on when he terrorized Northern California in the late 1960s. Even though he was never caught, some think he could have been a Scorpio or Sagittarius since those signs match up with the timing of the murders.
Jeffrey Dahmer was one of the most famous serial killers who even had a documentary or movie about him. He was born under the sun sign of Gemini. But that alone doesn’t mean much. What’s more important is that his Gemini sun was at a critical 0 degree. With his Moon and Mars also in fiery Aries, that fits him better than just his Gemini sun.
Ever heard of Aileen Wuornos? Her case was interesting. Even though she killed many men, some felt for her and weren’t happy about her death sentence. Aileen said she killed men in self-defense because they mistreated her. She had Sun in gentle Pisces, but that was her only Pisces placement. Her Aries Venus and Moon in Libra, with difficult aspects between them, may have contributed to her sad life story.
Gemini Serial Killers
- Jeffrey Dahmer
- David Berkowitz
- Elizabeth Wettlaufer
- Peter Sutcliffe
Pisces Serial Killers
- John Wayne Gacy
- Aileen Wuornos
- Dennis Rader (BTK Killer)
- Richard Ramirez
Sagittarius Serial Killers
- Ted Bundy:
- Richard Cottingham
- Gary Heydnik
- Raymond Fernandez
Virgo Serial Killers
- Rodney Alcala (Dating game killer)
- Ed Gein (The Butcher of Plainfield)
- Richard Angelo
- Harrison Graham
Scorpio Serial Killers
- Charles Manson
- Joseph DeAngelo
- Belle Gunness
- Robert Pickton

Gemini And Pisces: The Most Common Signs
Geminis and Pisces are often associated with serial killers based on their zodiac signs. While the signs alone don’t cause violence, they do share traits seen in some serial killers.
Geminis have two sides to their nature. They are always thinking and planning. Since serial killers commit multiple murders, they need to think things through carefully. Geminis are known as great thinkers who could thoroughly plan out killings. As a sign of communication, Gemini serial killers may have written manifestos or notes about their plans.

Pisces are very sensitive and deep thinkers. Since Pisces rules over the 12th house of the unknown, illusions, and mystery, Pisces serial killers likely fantasize about killing for years before doing it. It’s something they imagine in their head. When they finally take action, it’s because they want to experience something forbidden and out of the ordinary. Their crimes seem driven by fantasies and curiosity more than anything else.
Astrology Aspects That Make Someone A Serial Killer
While astrology can provide some guidance, it can’t definitively predict violent behavior. We all have free will to choose our path. That said, certain astrological aspects have been linked to potential violence over the years. But there’s no guarantee – we shape our own destiny.
Algol-Moon Conjunction
Algol, sometimes called the “Demon Star,” is one of the most famous stars in astrology. Found in the constellation Perseus, it’s actually two stars that orbit each other. This makes Algol seem to blink on and off.
In astrology, Algol has a scary reputation. It’s said to bring bad luck, violence, and strong emotions, often negative ones. It’s linked to struggles for power, loss, and danger. This relates to the Greek myth where Perseus cut off the head of Medusa.
Algol conjunct Moon may cause them to act violently, especially about feelings. This person was likely hurt by their mother as a child. They also may dislike women or have very intense emotions that aren’t stable.
Afflictions To Mars
Mars is associated with aggression, violence, and raw energy. When Mars is in challenging relationships like squares or oppositions with other planets, especially Saturn, Moon, or Pluto, it can show up in people who act violently. Saturn represents frustration and limits, while Pluto symbolizes power and destruction. Aspects between Mars and these planets may suggest buried anger, a propensity for cruelty, or struggling to rein in hostile urges.
Pluto Aspects
Pluto is associated with intense experiences related to power, change, and our shadow sides. Strong connections between Pluto and personal planets like the Sun, Moon, Mars, or Venus in someone’s chart can suggest they deeply engage with themes of control, domination, and behaviors that could harm themselves or others if not handled well. Pluto’s influence points to what we must transform within ourselves.
Saturn-Moon Aspects
When Saturn and the Moon are at odds, it can be hard to express your emotions in a healthy way. You may feel repressed or cold. Deep down, some issues could be bubbling up that cause you to act out in unhealthy ways. It might make it tough to connect with how others are feeling too. This astrological aspect suggests there could be some unresolved emotional baggage influencing your behavior.

Stelliums or Strong Emphasis In Scorpio
Scorpios are known for their intensity and passion. The sign is associated with transformation and powerful emotions. Ruled by Mars (traditional) and Pluto (modern), Scorpios have a magnetic personality and are drawn to exploring deep or taboo subjects. Those with many planets or important placements in Scorpio tend to think a lot about life’s mysteries. They may be fascinated by topics like death or what lies beneath the surface of human behavior. Intensity is their superpower, though at times, it can also lead them into dark places.
Afflicted Sun or Moon
The Sun represents who we are at our core and our sense of self. The Moon represents our emotions and gut instincts. When planets like Saturn, Pluto, or Uranus are causing problems for the Sun or Moon in our birth chart, it can mean we have issues with knowing who we are, feeling emotionally stable, or relating to other people in a healthy way. Challenging aspects to the Sun or Moon from those planets suggest we may experience those kinds of difficulties.
Final Words
This article was just for fun, not to be taken too seriously. We should never make judgments about people based solely on their astrological signs. That said, if you find serial killers an interesting topic, it could be worth looking more deeply at their full birth chart. Things like planets at critical degrees (0, 18, 22 and 29), the 8th and 12th houses, and difficult aspects between planets like Pluto, Saturn, Mars, Moon, and even Mercury may provide more meaningful insights. It’s always important to look at the whole picture!