It’s a Russian face mask from the 1950s, which reader “Shaun” found and suggested we do something with as, at a very long stretch, it could be said to be a small amount like Sonic The Hedgehog.

A very small amount like Sonic The Hedgehog

It’s a blue hedgehog mask. It’s on eBay at the moment. If you had the time and motivation, you could claim this was the original inspiration for Sonic.