There’s also Norio Wakamoto ones as well with his other roles being replaced with popular lines from Code Geass, but it doesn’t seem to match the sheer number of Rie Kugimiya vids. Strange, but true.

The real question though is what drives niconico otaku to create these videos. Is it a process or is it just entirely random? That’s kind of what I’m curious to find out.

@Kaioshin Sama
Probably not going to happen. I’ve given K-On! about as much recognition as I think deserves. Most readers probably have a fair enough idea what I think of the show, and even if I wanted to say something, I couldn’t put it better than this.

But you might be onto something about the correlation between the lack of traits in the characters and the fan-generated content. Certainly, it’s true that Mio has very little in the way of definitive characteristics, and the same is probably true of Yui and Azusa, though to a slightly lesser extent. I’m not completely convinced, though, since this tends to happen when and anime gets really big.

Anyway, K-On is basically just a template whereby the world has been given these moeblob characters with no real definable character traits to do with as they please. That’s it’s “secret”, that nobody can really support or dispute any of the content generated by this series or it’s fans.