In the head-canon this would be...I'm not sure. Surf's a dragon, that's what I know.
Had sat down one night to contemplate anatomy and get out all that pent up creativity, liked one of my doodles and decided to turn it into a half page of thing. Was just going to keep it until the point where I started inking, and realized I really liked it and would much rather hand it off to someone in particular.
So that's what I did.

Ink and marker and some paint out of some fancy, relatively thick, smooth sketchbook paper from a book I can't seem to find at Barnes and Noble anymore (I'm heartbroken).
Later 2013