Who made the Nyan Cat GIF?

Could you tell me who was the creator behind the famous Nyan Cat GIF? I've always been fascinated by the meme and its origins, and I'm curious to learn more about the person or persons who first brought this whimsical and colorful feline to life in digital form. Was it a solo artist, a team of creators, or perhaps a collaboration? I'd love to hear the full story behind the creation of this beloved internet sensation.