The Rainbow Meows are a group of five Awesome Pixelated Pop-Tart Cats who ate Rainbow Mushrooms after the success of Nyan Cat. They all got Nyan's powers but weren't as Awesome as Nyan to begin with, so their powers are to a weaker extent. However, there is strength in numbers. The Rainbow Meows are Blayn, Rayn, Yian, Gryan, and Pyan.
If one looks closely, you can see they all move a bit slower than Nyan Cat.