Julian was born in 1862 in York, England, after a man was possessed by an Ethros Demon long enough to produce a child with his wife. The family soon moved to London, and as the youngest of three sons Julian wasn't really expected to have a huge stake in the family's booming textile business. Instead, after a subdued and rather boring childhood filled with endless hours of education and manners, Julian was informed that he was going to be sent to take holy vows. A resentful but obedient son, he obeyed - but things got a little hairy when at the age of twenty-two Julian's demon half manifested and caused a very bad reaction with a crucifix. Dormant instincts took over and Julian possessed a nearby priest, but was incapable of sustaining control and was soon ejected from the body. He fled the church, severing ties with it and his family in 1884.
Realizing that something was extremely wrong Julian sought out information about himself, chasing tales and fortunetellers until he eventually uncovered his half-breed status. He spent a year learning about the true Ethros demons from a well-informed demon hunter under the guise of a student, and eventually decided that he would do his level best to be the perfect model of a demon. The rest of his life hadn't been successful and he had no other prospects, so his greatest ambition became engineering a massacre that would be remembered throughout history. He killed the demon hunter while the man slept and went on his way. When his first few attempts at causing mayhem were met with failure he went to Plan B, which consisted of becoming a stage magician and then an actor in London's West End. Though he traveled on and off around Britain, Julian was in London at the time of the Jack the Ripper killings in the autumn of 1888. He was nicknamed 'Jack' by several friends in the know about his heritage who jokingly blamed him for the murders. As it happened, Julian envied the Ripper and wished it was him, but insisted (and still does) that he could have done the job better. Unlike the Ripper's reign of terror the nickname has lasted through time, and on occasion Julian lays false claim to the famous identity to impress. He eventually left the stage in favor of picking up a decade-long career as a jockey, participating in several of Great Britain's flat races and long-distance races. He enjoyed the job tremendously, but investigation by the demon-hunting group his former tutor had belonged to led Julian to panic and flee England in early 1912.
His chosen method of escape lay in an ocean liner: the Titanic. He narrowly avoided the ship's disastrous fate: Julian originally boarded in Southampton and disembarked at the Cherbourg stop in France to sight-see, but ended up missing the next legs of the ship's journey by being too drunk to make the departure time from France. He erroneously blames another demon he met on board for the sinking of Titanic and remains convinced that the opportunity to doom the ship had been 'stolen' from him. Julian eventually arrived in New York and subsequently became a low-profile presence on Broadway from 1912-1920, mainly taking ensemble parts or very minor roles. When Prohibition rolled around and more or less cut him off from his sources of alcohol he abruptly left the Big Apple to join up with a group of mobsters in Chicago, seeking glory, booze, and murder. During his time there he was party to a number of bank robberies and shootouts, and as usual almost always managed to be too late to the scene of the crime to cause any real damage when anything truly major happened. Rather than live the life of excitement and blood that he expected it was far more common that Julian would end up moving distilling equipment or overseeing the transportation of moonshine. During his stay in Chicago he met a woman named Simone Muldoon and eventually discovered her to be a vampire after witnessing her draining the blood of her mobster boyfriend. Smelling opportunity, Julian revealed his own demonic nature and struck up a relationship with the woman.
He returned to the stages of Broadway in 1931 with Simone at his side, finding moonlight employment under Texas Guinan working at at the speakeasy called the 300 Club. As they always would, however, Julian's eyes began to wander - and Simone caught him flirting with Guinan. Jealous and spiteful, the vampire killed Guinan before departing in a huff, leaving a heartbroken Julian to take care of creating an adequate cover-story for his former boss' death. He left New York immediately afterward, moving on to Boston in 1933. There, Julian involved himself with the owners of a massive steel fortune during the twilight years of the Great Depression by wooing the oldest daughter of the family, ending up riding the economic disaster out in style until 1939 - the onset of WWII. He then made his way back to New York City and reestablished himself on Broadway, waiting out the war as an entertainer. He stayed beyond V-Day and wouldn't leave until 1952 when he started to travel around the country, visiting major cities and living the lifestyle of a semi-wealthy drifter.
Julian was picked up for drunk and disorderly contact in 1955 while in Portland, Maine. Thanks to some of his drunken ravings he was promptly committed at a government-funded psychiatric institution and labeled a paranoid schizophrenic. He was detained there against his will with his abilities inconveniently suppressed by sedatives until 1960, when he managed to hoard enough stimulants to counteract his drug regimen. Riding a wave of amphetamines Julian possessed a psychotic inmate known to be dangerous and killed two orderlies, inciting a violent riot and escaping the facility before the authorities responded. The psychopath's body was ditched within an hour of the escape and Julian was once again at large. He resumed his previous pattern of wandering the lower 48, appearing across the country whenever and wherever he pleased in a series of double- and triple-homicides. He turned up late for the Tlatelolco massacre in October of 1968 by having missed his plane to Mexico, a trip being made to attend the Olympics. He was forced to catch a flight leaving several days later. That same year he claims to have had an affair with the recently-divorced Audrey Hepburn. Although he came into contact with her, they were never romantically involved.
In 1971 he crossed the Atlantic again, spending several years in Ireland in hopes of getting involved with some of the tension and violence caused by the factional disputes being had there. After missing both Bloody Sunday and Bloody Friday, Julian was 'robbed' of the North Ireland Kingsmill massacre in 1976 due to sleeping off a night of wild drinking in a local pub. It was the final disappointment for him and he took the next flight to New York City and the life of the stage. Drunk and out to prove himself capable of changing the world, Julian possessed Mark David Chapman in 1980 and attempted to assassinate Yoko Ono. He missed and killed John Lennon instead. Julian abandoned the body immediately and proceeded to hate himself for the rest of the decade, taking a two-year break to feel miserable before returning to his acting career.
The 1990s were a time of radical change, and Julian did his best to adjust despite his stubborn clinging to various cultural and social norms from the last century. In 1996 he hit upon a new scheme: serial killing. His method involves the possession of wealthy individuals and the altering of their wills, naming himself as the sole inheritor of various small fortunes. The men he possesses (and they are always men) are soon killed by close friends or family at the rate of two or three a year, the murderers all also victims of his possession. Due to the abnormal number of inheritances that Julian has been racking up he has come under federal and local investigations across the United States, and is the number one suspect for these deaths though he has never been named as such or questioned by the authorities. Much of the money he makes is blown on gambling, alcohol, and bad investments - and after each killing Julian immediately packs up and moves, citing emotional turmoil in order to flee state jurisdiction just in case any department summons enough evidence to issue a warrant. Thirteen men of means have been killed this way since his wave of murders began, and his most recent victim's death has led him to settle in Los Angeles, moving from his latest residence in New York City.