Reward emote from chest not appearing?

So i got a chest from earning an S yada yada, and when I opened it, there was an emote, one I've never seen before. I think it had nunu or neko i cant remember, but it came with a title that had a pun in it. So I clicked "unlock Permanently" then went to my inventory, turns out, nothing was earned from that chest. I tried to find it on the emotes page but couldnt find it, then i looked at the icons page to see if I had mistaken it for an icon, but it was not there either. I would remember it if I saw it again, but it just disappeared into thin air. There was no golden indicator on the menu tabs that indicated that there was a new item in my inventory. Just nothing. Help??