Stealing artwork and taking credit for it is something that is taken seriously by the staff here at MechScape World. A lot of time and skill goes into art and it is wrong to take credit for creating something you didn't do.

Stealing artwork consists of posting the picture (without saying who created it) and taking credit for it. If you are found guilty of such an immoral offense, it is a two week ban - no questions asked. If you are caught doing it again, it is a permanent ban.

Does this include using copyrighted Deviantart images?

I'll admit I did once in a colab, but I didn't know it was copyrighted and got permission afterwards.

If you get permission to use it, you may, but you shouldn't take credit for it in anyway and tell who made it.