1. Cryptic communication: The Zodiac Killer was known for sending coded letters to the media and police, taunting them with his crimes and claiming responsibility for multiple murders. This level of communication and interaction with law enforcement sets him apart from many other serial killers.
2. Lack of a clear motive: Unlike many serial killers who have a specific motive or pattern to their crimes, the Zodiac Killer's motives remain unknown. His attacks appeared to be random, making it difficult for investigators to determine why he targeted certain victims.
3. Changing methods: The Zodiac Killer used a variety of methods to carry out his murders, including shooting, stabbing, and strangulation. This flexibility in his approach makes him unique among serial killers who typically stick to a specific modus operandi.
4. Public persona: The Zodiac Killer actively sought attention and recognition for his crimes by sending letters to the media and police, creating a public persona that set him apart from other killers who try to remain hidden.
5. Unidentified: Perhaps the most intriguing aspect of the Zodiac Killer's profile is that he was never caught or identified. Despite numerous theories and suspects, his true identity remains a mystery, adding an extra layer of intrigue to his case.
6. Geographic span: Another key characteristic that sets the Zodiac Killer apart is the wide geographic span of his crimes. Unlike many serial killers who operate within a specific area or region, the Zodiac Killer's attacks spanned different locations, including California. This made it challenging for investigators to track him down and link the crimes.
7. Disguise of identity: The Zodiac Killer's use of disguises and tactics to conceal his identity during his attacks also make him stand out among other serial killers. Reports from surviving victims mentioned that he wore a hood or glasses to partially obscure his face, further adding to the mystery surrounding his identity.
8. Symbolic messaging: In addition to his cryptic letters, the Zodiac Killer also left behind symbols and cryptic messages at crime scenes which added to the aura of mystery and confusion surrounding his motives and identity. This unique aspect of his communication style set him apart from other serial killers who typically leave behind more straightforward evidence.
9. Length of time: The span of the Zodiac Killer's crimes over several years also distinguishes him from many other serial killers who have shorter periods of activity. This prolonged period of criminal activity allowed him to continue to evade capture and maintain his notoriety over a longer period of time.
10. Legacy of fear: The enduring fear and fascination associated with the Zodiac Killer case have solidified his place in history as one of the most infamous and enigmatic serial killers. Decades after his last confirmed killing, the mystery of his identity and motives continue to captivate both true crime enthusiasts and law enforcement professionals alike.