This is a prototype character reference for Sulfur. There's not really much else to say about it other then that Sulfur's design here has a few updates from his previous design:
• On the side design, the patch of hair next to his ear had an akward shape. That is fixed in this design.
• The eye design before had a patch of brown, while here, it doesn't. I find that the eyes look much better this way than they did before. However, any situation that I draw Sulfur in that requires eye color (I.E.: In a diffrent style.), I will use the shade of brown that I used before for his eye color.
• The black parts of his shoes are lighter here than they were before.
• The side design now shows his back stripes.
• The side design now shows his hands (At least, I tried to show his hands).
• The back design now has two alts. here: One with his tail showing, and one without.
• The logo on the back of sulfur's hands is updated in this design compared to his previous design.

The only other thing worth mentioning is that if you are every interested in drawing Sulfur, do this; just draw an anthropomorphic striped skunk the way you typically would do with the only difference being my logo on the back of the hands, and the eye color being brown (if you plan on implamenting eye color).