Slightly censored version of this. Gonna use this for entering raffles on Twitter because the other one is marked as mature and as such no preview would show up if I linked it.

Some things to keep in mind if you draw him:
- Most importantly by far, HE DOES NOT HAVE A TAIL. It's clear to see on the ref sheet, but I've still had artists sometimes draw one on him out of habit.
- It's the part I censored and you can see it in the uncensored version above, but he has a slit and no external balls.
- He's got a humanoid penis, as depicted here and here.
- He also always goes commando.
- Normally he's shirtless, but he can be depicted in a full gi, too. He also owns a black gi as depicted here.
- Aside from his karate gi, he also has a casual outfit as depicted here.
- He also has a set of workout clothes as depicted here and here.
- It should be noted that he makes it a point to always fight shirtless. If his chest isn't already bare by the time a fight begins, he'll take off whatever he's wearing above the belt at the first opportunity that presents itself.
- He can breathe smoke out of his nostrils at will. Its color depends on his mood. At his angriest, his smoke is pitch black with glowing embers.
- Despite being a fire dragon, he cannot actually breathe fire at will. It can still happen involuntarily under certain conditions, though.
- His high body temperature makes him resistant to the cold, but he can't deal well with heat. He also breaks into a sweat easily.
- The aura you see him having in the ref sheet is not canon.
- He owns a pet bearded dragon as seen here.
- He's a 6th-degree black belt in karate, as well as a martial arts instructor. His rank is depicted by the six golden stripes on his belt, three on each end. As a little extra fact, he used to work as a personal trainer in his 20s.
- Personality-wise, he appears intimidating and might have a case of resting bitch face (depends on the artist), but is friendlier and more approachable than he may seem. Stoic and reserved, but gets loud and boisterous when drunk.

This list is by no means final. I'll add more and organize it as things come to mind, but for the time being, this should hopefully give you a good insight into his design.

Art drawn by  kalchivo
Censorship from a sticker drawn by  a513