I felt instantly attracted by the drawing of Fenrir and had fun reading the story behind him. There were also quite some interesting drawings in the wiki-article like this:
I don't know if this is appropriate, but I can even imagine wearing your Fenrir and Pac-Man drawing on a T-Shirt. Also thanks for bringing this interesting imprimatura technique up. Always so much to learn following your posts :-)
Somehow I imagined that Fenris would be your favourite. I could publish them in high res. as CC-by. the it would be easy to make t-shirts. I'll do it on Diaspora - it is my Creative Commons library.
Awesome, I'm going to print a shirt and maybe even make a post about it. For the CC-BY it would be best, when a signature/link of your choice is added directly to the image.