Board Thread:Support Requests - Getting Started/@comment-25414732-20170629112211

Hi. I was wondering if I can post ,on my wikia, images found on the Internet. Is it legal if I provide the source of it? For example, a picture of Spiderman; I don't have any copyrights and I never refer to it as "a picture of Spiderman", but I am providing the source. Is it legal? 