Zukun is definitely large, even for a half-orc - both of his parents are big, he definitely inherited that.  Gigantic and muscular, with piercing red eyes.  His skin is plains green, and while his tusks aren't the longest, they're thick enough that he was extremely proud of them growing up.

He tries to wear baggy clothes, even though he finds them a little uncomfortable, since it makes him more approachable than when he's not wearing a shirt.