I sent this message to the blog admins:
The user Roseric has published at least 13 images that he took from my deviant account without permission and my signature was removed from them, leading the viewer to believe that Roseric is the author of the image. In accordance to the Copyright Law this constitutes a crime. In fact all of Roseric's images have been stolen (some I can identify as being from DeviantArt). I have already sent a message to Roseric in DeviantArt asking for the removal of the images. However, given the massive theft perpetrated by your user I ask that his blogue be removed altogether.
Thank you in advance