[2020] Is there a name for the weapon Crowd Favorite is using? Was it ever a real thing?

Originally posted by crimsonBZD

It's a comically oversized version of a Caestus. They're basically ancient brass knuckles filled with padding to protect the wearer, while having metal plates, stones, or spikes on the outside.

Here's a great example of a realistically sized stone Caestus. https://upload.wikimedia.org/wikipedia/commons/thumb/7/70/Boxer_of_quirinal_hands.jpg/1280px-Boxer_of_quirinal_hands.jpg