<P> In "Bring It On" Klaus sleeps with Hayley Marshall and provides her with information in regards to her family, because he noticed a crescent moon shaped birthmark on her shoulder . </P> <P> In "The Originals", the backdoor pilot for the spin - off show, Klaus is told by a group of witches, who are blackmailing him, that Hayley is carrying his child . They threaten to kill the child and Hayley if he doesn't . Klaus decides he wants this child, so he vows to protect Hayley and their unborn child, whatever it takes . </P> <P> As the Original Vampire - Werewolf Hybrid, Klaus is the strongest of the original vampires, despite not being the eldest, he grows stronger and faster with age due to his vampirism and when he is using his lycanthrope enhancement, also increase in strength when enraged; due to his werewolf side . </P> <P> In Klaus's confrontations against the - then Enhanced Original Vampire Alaric Saltzman, his step - father Mikael, and the Upgraded Original Vampires Lucien Castle and Marcel Gerard respectively, the latters' are apparently proven to be physically stronger than Klaus, however, it should be noted in each of these confrontations, the Original Hybrid never truly used his full strength, as his physical attributes (such as strength and speed) are at their peaks when he is fully transformed into his werewolf form . </P>

How did stefan and damon get their rings