Willow Rosenberg is the Wiccan practicianer of the series. She is my favorite female on the show because of the fact that she is wiccan. I am as well. Ok, first it was interest in Xander, then she had Oz, who turned out to be great, but something terrible happened, she got caught and Oz left for a while. Personally, I am a fan of Willow/Spike. Don't ask why. I love opposites, they have the best relationships.
Spike a.k.a. William the Bloody
Spike is my personal favorite. He is hotter then hell and colder than ice. Perfect combination of mystery and bad-ass bad-boy. He is someone who isn't very reliable unless you capture his heart, though he may not admit to having one, or even seem to. He has a soft side when it comes to love and once he's in, there's no worming your way out. In fact, just to keep you happy, he'll do just about everything. Isn't he gorgeously perfect?!
Rupert Giles
Giles is the watcher. He has been Buffy's watcher for a while, but recently got banned or something. But he still takes on the responsibility. He is the one who knows the most about the demons and all sorts of stuff besides Willow.
Angel/Angelus, Dru and Spike
Angel has made a few great appearances and now has his own show. This is just a few little pics.
Buffy summers is the head of a group of Slayers and Watcher(s). She is the'Chosen One' to help keep the peace. She has remained the main character throughout the series and the one always taking the risks. The cast recently graduated and a demon thought to take over the town on graduation day. Who saved them all? BUFFY! With the help of her friends.
Xander Harris is the main guy in the group now that Angel and Oz, as far as I know, have left. At first it was Willow, then Cordy, now Anya. Can anyone say that this guy is a definate Lady's man? Ah! Anyways, Xander is what you would call a switchhitter, like Spike, though he hates him, he will usually stick to the winning side or else out of the game.