Nyan Cat is the name of a YouTube video, uploaded in April 2011, which became an Internet meme. The video merged a Japanese pop song with an animated cartoon cat with the body of a Pop-Tart, flying through space, and leaving a rainbow trail behind it. The video ranked at number 5 on the list of most viewed YouTube videos in 2011.
Nyan Cat appears in the move of Hatsune Miku that has the same name as his own name. Nyan Cat will run forwards in the air leaving a rainbow behind, huring anyone in its path.