Spike first traveled to Sunnydale in 1997, accompanied by Drusilla. He quickly established himself as one of Buffy Summers ' most dangerous enemies, but was eventually forced into a series of uneasy alliances with her and her team, the Scooby Gang , after being captured by The Initiative and implanted with a cerebral microchip that rendered him unable to harm humans. Eventually, Spike realized that he had fallen in love with Buffy and officially joined the Scooby Gang, later being motivated by his love for her to successfully fight to regain his soul .

Spike sacrificed his life in battle against the First Evil , both defeating its army of Turok-Han and permanently closing the Sunnydale Hellmouth , as well as destroying the town of Sunnydale. However, bound to an ancient amulet , Spike became an incorporeal entity haunting the halls of the Los Angeles branch of Wolfram & Hart , then under the management of Team Angel . After becoming corporeal again, Spike struggled to find a place in the world, only to join Angel in his battle against the Senior Partners and become a Champion in his own right.

After a slew of adventures, Spike reunited with Buffy and the Scoobies in Europe and joined them in the battle against Twilight . When the world was made void of magic, he moved to San Francisco to continue fighting by Buffy's side, but left for a time in the hopes of "finding himself", before returning to San Francisco when he heard the news that Dawn Summers was sick. He then established himself in the city alongside the Scooby Gang, sharing an apartment with Xander and working as a supernatural consultant for S.F.P.D. With this new life, he and the Slayer gave a chance for a serious relationship.

William Pratt [2] was born circa 1850 to 1853 in London, England to Anne Pratt and her unidentified husband. Anne often sang him an old folk song called "Early One Morning" throughout his infancy and childhood. [3] By 1880, William had grown into a sentimental, and ineffectual gentleman who lived alone with his ill mother. He was a poet, and enjoyed a certain level of economic comfort. Struggling to make a place for himself in London's high society, he attended parties, and was nicknamed "William the Bloody" because his poetry was so "bloody awful." This moniker, with far deadlier connotations, followed him into his future as a vampire .

After Drusilla sired William, she buried him and allowed him to be reborn as a vampire; he crawled from the depths of his own make-shift grave. [5] The pair partied for several days afterward, both draining human victims and drinking alcohol. They eventually decided to go back to William's mother's residence, where a live-in servant ignorantly invited them inside.

Spike also developed an intense and all-consuming obsession with Slayers . He reveled in dangerous battles, and to him there was nothing more exciting than a life-and-death struggle with his kinds' greatest adversary, the Chosen One. He first learned about the Slayer from Angelus, who used the term in an attempt to frighten him. It had a very different effect on the young vampire, who, from then on, sought out Slayers to battle, an affair that he poetically likened to "dancing." [4]