02A-D Music Suite[1] is a mix of background music that plays throughout Cookironi, Hot Lava Shower, Pothole, Mailman, Another Nixel and Rockball. Parts of it play in the Volectro Mirror video.
The ending seems to be from a cut episode, although a small section of it played at the end of the games on the Cartoon Network Mixels Website, as well as the Volectro Mirror short.