Board Thread:Community Decisions/@comment-24510587-20191026212603/@comment-24510587-20191026233111

It would be theft if the images in question were only available through purchase, or if we somehow used the images for monetary gain - neither are the case, therefore it is defendable as fair use.

Side note, in the case of the Halo games, one is in fact allowed by Microsoft to display and distribute content from the franchise as long as it is non-commercial and personal.