initially assumes it works the same with anything living), Spike turns to the Scooby Gang for protection, bartering his knowledge of the Initiative. (Though he still spars with Buffy, provided he has no real intent on harming her) His inability to bite is comically compared to impotence, much to Spike's constant humiliation; in "Doomed", he attempts to commit suicide by staking himself at Xander's house, but is stopped by Willow and Xander. Eventually, he inadvertently discovers that he can harm demons and enthusiastically joins a fight with this knowledge, showing that he's less concerned about what side he's fighting on than fighting for the thrill of it. Occasionally helping the Scooby Gang by providing them with information and/or combat assistance in exchange for cash or for the joy of fighting, but having no qualms about betraying them to such enemies as Faith and Adam. In season 4, Spike was introduced to fill the antagonistic role that Cordelia had in seasons 1 to 3; as Joss Whedon explains on the DVD featurette, "All of our characters got to the point where they were loving and hugging, and it was sort of like, where's Cordelia?" Spike appeared in every episode thereafter with the exception of "The Body". In season 5, after some erotic dreams, Spike becomes aware to his horror that he has fallen in love with Buffy. He becomes a more active participant in the Scooby Gang, jumping into several of Buffy's fights to provide assistance, whether she wants it or not. When Buffy rejects his advances, Spike attempts to prove his love by kidnapping her so that she can witness him killing Drusilla for her, to little avail; in her disgust, Buffy un-invites him from her house (something she had not bothered to do in almost three years since their alliance against Angelus) and alienates him from the group. Spike then has Warren Mears make a robot in Buffy's likeness, programmed to love and obey him. Though Buffy is disgusted by this, her hostility towards him fades considerably when she learns that Spike refused, even under intense torture, to reveal the identity of the Key to Glory, nearly laying down his life to protect Buffy's sister Dawn. Buffy is moved by this unexpected loyalty and kisses him, saying she will not forget what he has done. In the days and hours leading up to the final showdown with Glory, Spike