I reblogged a shot of this guy cosplaying Tahno a few weeks ago (unless I’m confused, which has been known to happen), and I’ve seen some awesome, high-quality shots of these two reenacting Tahno and Korra scenes from Book 1 on deviantART. It was great to meet them in person. They might have won the Smirk Award.
EDIT: Looks like from the notes that I may have been confused after all. So, seems like there are two stellar Tahno cosplayers out there. I THINK THEY SHOULD DO BATTLE!