...you're joking right? To start off, your images were miscategorized in the first place. Secondly, you cannot "peruse" the internet for images you would like to "render." That's called copyright infringement, and is generally looked down upon.
Since you're obviously too bothered to read the information dA has about what constitutes as "fan art" I will paste it here for you:
What does deviantART consider "Fan Art" to be?
Original fan art are those works in which the submitting artist has done 100% of the work but the work itself depicts characters, scenes or other themes which were properly created by another creative person.
When creating fan art, which essentially copies from an established source, it is considered good etiquette to credit your inspiration. Please note that it may be considered unacceptable to precisely duplicate your inspiration by directly tracing or copying every single detail so that it is difficult to tell your work from the original, so please be certain to add your own personal touches and style.
Fan art should not feature screenshots, official artwork, scans, copyrighted photographs, or similar items.
Your comments: "idk where the pic comes from i was just asked to render it"
It took me two seconds to find it. Thing is, now you've stripped away all remnants of the original artist, and slapped your own signature on it. Not only that, you have a Print enabled of this, as you do with all of your "Renders". When you upload something to Deviantart it automatically copyrights it to you. You had nothing to do with the creation of these things. The only thing your doing is stripping the original artist away and enabling anyone to paste this like a stamp on their own backgrounds.
For this one:
Your comments: "(insert usual crap about copy right) check fav's for origonal pic"and you have Print enabled
The original artist is even on Deviantart. You just didn't even bother to ask them if they minded you re-uploading their work without their signature and telling everyone they can use it however they want. It would have taken you 2 seconds to send this Deviant a Note, but if you did that, there's a high chance they would have said no. If you can't get permission to use something, don't use it.
What's not acceptable about their decision? You were offering images you didn't create as stock/references, which - aside from being a disrespectful and dickish thing to do - is also against the dA TOS.
And hell, if I were an admin, I'd wipe your whole gallery for your fucking idiotically insulting attitude toward crediting and copyright. 'bla bla bla insert copyright crap here yak yak yak', 'credit to origonal owners'... and that's when you can be bothered to credit at all.
As a professional illustrator it's my professional opinion that you are a mong.
There's fan art (meaning the artist actually has to create the piece with their own skills, on their own merit), and then there's what you did. The fact that you have to make your first comment a disclaimer of not having prior permission pretty much nullifies anything you're complaining about in the first place You clearly already notice the problem, you just don't want to admit it IS a problem.
and if I have anyone's image that I don't have permission that is originally from dA. I'll be more than happy to take down the render and ask permission. Untill such time though? please refer to the last line in OP