I know we're a bit late to the party, but my friends and I are doing a Let's Play on Deltarune, and decided to get a custom thumbnail for it
this is actually a YCH found here: http://www.furaffinity.net/view/29403834/ we figured it would work well for our thumbnail, and asked the artist if he could draw up pictures of the rest of us drawn as the other two, to which he obliged :3
Nekrozs
