Buffy The Vampire Slayer: 10 Best Characters Only In One Episode
5. Der Kindestod
An archetypal 'monster of the week' (though unique in name and number), Der Kindestod is nonetheless a fear inducing bad guy and a fascinating character, not least because he killed Buffy's cousin when she was just eight years old.
Making his sole appearance in season two's eighteenth episode, Killed By Death, Der Kindestod (played by James Jude Courtney) haunts Sunnydale Memorial Hospital sucking the life out of sick children, who, coincidentally, are the only ones who can see him.
Der Kindestod uses this relative invisibility to take his time with his kills, sitting astride his victims while they struggle and slowly drawing the life out of them via his extendable eye stalks. Beyond this he is supernaturally strong, sharp clawed and a snappy dresser - because you've got to look your best when you're going out for a meal.
Last seen with his head on backwards.
"The name means 'child death'. This book says he feeds off of children by sucking the life out of them."