"Giving credit" when uploading images to a wiki

[Petie]

I'm not sure how to answer your first question but I think I can answer the second. The copyright does in fact remain with the original copyright holder for the game. Our use of them here (and elsewhere in various projects) is a bit of a legal grey area as we technically do not have permission from the copyright holder for their use. However, for the most part, this is willingly overlooked by the copyright holders because their use on this site and in the various projects that stem from it is all not-for-profit. Take-down requests are always complied with but they are not frequently received.

So, to sum up that rather long-winded answer: The copyright of all of the ripped images of the site remains with their company of origin.