I draw Glacius all the darned time, he’s my absolute favorite haha. Some threads here and here; I’ve also drawn a couple of Cinders that people have commissioned of me, and scattered art of other characters crops up every once in a blue moon on my Ask Glacius blog (which has been silent for awhile but I’m planning on getting up and running again before S3 hits). There is another character that I’m in the process of doing a full illustration for, but as that is freelance-related I’m not at liberty to say who or what that is for.
Outside of that, who knows! I really want to draw classic Riptor at some point, but what I actually draw when I have time outside of freelance is always pretty up in the air.