Firstly: there's no plagiarism. I very remarked that's not mine content and work.
Secondly: i have never used it to either get benefits or money specifically, which would be a real dickhead move.
Thirdly: that's fan content, as many other things that get produced in the community from time to time. Although it is in WW hands to either Ignore as the much others or specifically target it, there's the Cease and desist letter. Even though that's not an requirement, much authors firstly contact the creator of the fan content and kindly asks for it's removal, peacefully, thing i would definitely agree on. If WW really sues me, being an international Issue, not only would him need to hire two Lawyers for the two countries, but also pay for extra things, such as translation, possible fees, etc.
All in one: Very low chance. Though he could, indeed...