1)Spike- This character has grown alot since first appearing in the Buffyverse. He made the transistionfrom Buffy's deadliest foe to her champion. Pulled off perfecctly by Matsters. Truly pivotal the last couple of years of the show, if not more so than Angel ever was.
2) (Tie) willow And Xander- The Heart and soul of the show, they have been there since day one and we actually like them more than Buffy most the time. Each with their own quirks and chateristics make them the most fleshed out chaters to appear on teltelevision.
3) The Mayor- He is the best Buffy villain everPERIOD. Your supposed to hate him, but still you laugh every time he cracks a joke. Hell, I was pissed off when he died and I lit up every time he made a guest appearance on Buffy. For that he gets on my top five.
4) Wesley Wyndam Pryce- Like Spike, Wesley has come along way since season thre of Buffy. He surpassed Giles as a well fleshed out character. Don't believe me? Watch the last tow seasons of Angel.
5) Andrew- Alright, I might be insane, but Andrew was the highlight of season 7 and Storylteller was the best "funny" episode ever. Plus, he is as God.
6)Faith
7) Oz
8)Buffy
9)Giles
10)Principal Schnider
11)Anya
12)Jonothan
13)Dru
14)Ben/Glory
15)Tara
16)Cordelia
17)Gunn
18)Lorne
19)Ethan Rayne
20)Angel
21)Warren
22)Caleb
23)Jenny Calnder
24)Joyce
25)Robin Wood
26) Lindsey Mcdonald
27)Lilah
28)The Master
29) Darla
30)Kendra
31)Fred
32)Harmony
33)Forrest
34)Amy
35)Riley
36)Quentin Traverse
37)The First
38)Connor
39)Mr.Trick
40)The Beast
41) Doyle
42)Jasmine
43)Maggie Walshe
44)Vi
45)Molly
46)Gwen
47)Cassie
48)Rona
49)Dawn
50)Kennedy