All publicly recognizable characters, settings, etc. are the property of their respective owners. The original characters and plot are the property of the author. The author is in no way associated with the owners, creators, or producers of any media franchise. No copyright infringement is intended.
However if Joss ever wants to sell Spike - Then ... !!!
Thanks also to James Marsters - without his great acting I wouldn't have got involved in fandom - and thus writing!