Just finished this very old Xena/Gabrielle fic http://www.merwolf.com/shadow1.html (next parts are linked at the bottom, though in some instances they are not linked correctly so just go to http://www.merwolf.com/ffiction.html and scroll down to Xena the Merciless section and you can choose a part)
It scratched my itch about a brutal and ruthless MC that kills people whenever they please, though, not without a reason (internal one more often than not). Though I won't be reading the sequels, because I absolutely despise the 'misunderstood killer that meets the love of his/her life or some other important figure and they develop a conscious and stop killing' trope and it looks like it will head in that direction.
It's a very good read though, and lengthy. Probably around 200k words, that's just an estimation.
The site http://www.merwolf.com/ffiction.html also has another Xena series that is also, fairly long, because of the number of installments, but there is also some OCs I think, that were eventually published by the author and can be bought, though you can still read them on there.
last edited at Aug 4, 2016 10:59AM