I read almost all of Kari Mouke's fanfiction and I fell in love.
Can somebody please recommend to me any authors that you think I would like considering I enjoy Kari Mouke fanfiction?

(P.S. I like fanfiction where Buffy is out of character from canon. Canon Buffy is a whiny do-gooder who treats Spike like shit.)

Black Widow by bogwitch has a darker Buffy in it but it is the only fic I have read by that author. Most fics that have Buffy really acting darker/out of character on my lists are ones where she is vamped, or are by Kari M! EDIT: actually I've just noticed I have read Heartstone by bogwitch too but I don't remember much about it. I have marked it for humour though which isn't very Kari M.

If you are interested in the vamp!Buffy fics there are a few threads you could browse...

https://www.spikeluver.com/Forum/index.php?action=vthread&forum=5&topic=4660
https://www.spikeluver.com/Forum/index.php?action=vthread&forum=5&topic=4736
https://www.spikeluver.com/Forum/index.php?action=vthread&forum=5&topic=1360