No, these aren't stolen pictures. Over the past couple months towards years. I changed my name on social media pretty often. From Cec (my longest standing), to Ulysses, to Lullaby, to now Cartaphilus.
I have all my artwork available on my steam profile. Watermarks are inconsistent and I can understand how I can be viewed as a thief on Deviant Art, but on steam, where all my artwork is uploaded and can be viewed it is possible to realize that it is in fact my work with different watermarks.
https://steamcommunity.com/id/Cartaphilus-/