My favourite would have to be Spike. I liked Angelus and Dark Willow too, but Spike was one of the only bad guys with a good sense of humor. He was always making jokes at Angelus in season two and the scenes in "Becoming" were priceless (someone wasn't worthyyy... 😀 ). He was totally different from the way the other bad guys were written, less "I'm so evil, now I'll show off about it... lets destroy the world". And I loved when he came back in season 3, he was all love-sick and discussing his romantic troubles with Buffy's mom. Lol, ten points to Joss for giving us Spike :cheerlead