Board Thread:Support Requests - Getting Technical/@comment-26530425-20151129090419/@comment-3026053-20151130085125

Wikia promotes the idea that the separate wiki's are governed by the community. As such, a bureaucrat can be demoted upon request, but only when that request comes from the entire community. So you'll have to start a public thread on your wiki on which the entire community (or at least as many as possible) weighs in to voice their opinion on whether or not Gene Khan should be demoted. If he tries to thwart said community discussion, you can alert Wikia Staff about that fact using Special:Contact/general. If your public discussion leads to the consensus that Gene Khan should be demoted, you should contact Wikia Staff via Special:Contact in which you link to the discussion where the community came to that conclusion and request them to strip Gene Khan from his bureaucrat rights.

So know that "i have a whole bunch of reasons why he should be demoted!" is not sufficient for Wikia Staff to take action, they will only do so when the request is backed by the majority of the community.