hmmmmmmmmm
.....well, the things he usually does may be hard to draw? (unless you share my love of drawing people doing Badass Things, hahaha) um. Basically you can draw him doing whatever you want! Or nothing at all, if you'd prefer. c:
But if you still need ideas, I will post a little bit about him!
He is a bounty hunter-- he spends most of his time running around the forests and mountains of his homeland fighting massive insects and hunting down criminals. (he, uh... doesn't have a name. I call him Patch because he wears an eyepatch and I am uncreative.) He fights a lot, and travels, and camps in the wilderness. Sometimes he goes into cities/towns to collect bounties but he doesn't stay long (because he is kind of a freak, though he can hide it when he needs to). He fights with that spear/glaive thing he has in a couple of those refs and he doesn't wear shoes, and those things are not really relevant, but oh well. I don't feel like textwalling here.
And you could just make regular Tavros horns! That way you can be both of them and they will still get the point across. xD (Tavroscestor's horns, in correct proportion, would be ridiculously heavy, get in the way of everything, and probably not stay on. They would also probably not be allowed at con...)