Board Thread:Support Requests - Getting Started/@comment-38391427-20190726204945/@comment-168424-20190729200501

A good general guideline is this: if the wiki is meant to promote a topic, then images used based on that topic usually fall under "fair use".

However, it sounds like you want to use a Ben 10 image on a wiki that is not specifically about Ben 10, so generally that is not allowed.

However, unless the wiki gets big, most copyright holders won't waste the time issuing a take down notice.