Who is the evil Nyan Cat?

I'm curious, who exactly is this "evil Nyan Cat" that's been making headlines lately? Is it a character from some popular meme or internet trend? Or is it something more sinister, like a hacker group or criminal organization using the Nyan Cat persona as a front? And what kind of impact has this "evil Nyan Cat" had on the cryptocurrency and finance world? It's intriguing to see how such a seemingly harmless internet meme can evolve into something that garners so much attention and concern.