So without giving too much away regarding the plot, this guy is from episode 3 of BNA, introduced as Mr Yaba.
I'm not too happy with how this one turned out to be honest. But I had already worked on it for far too long to scrap it. So here it is. A slight exaggeration of what happens... but that's all I'll say. I'll come up with something better... But in the meantime, enjoy.
TL note: Rhinoceros in Japanese is sai 犀 so I thought it was a fitting title.