Basically, the characters section on that article only lists characters that you can download, for the characters he's making but hasn't released (Such as Bad Mr. Frosty), add them to the W.I.P section which hasn't been added to the article yet for some reason.
I've been losing interest more and more when it comes to spriting up Cali Bear. And, to be blunt, a lot of setbacks happened... (That time when I left, the bloody laptop being taken away, exams... etc.)
And I figured it was doing more harm than good for ya to rely on me, so I'm gonna go ahead and end my involvement with the development of Cali Bear.
Now, here's what I suggest. It didn't take me long to learn how to sprite the way I do now, and I figured it out on my own. But if you're stuck on it, I suggest you go ahead and ask Plasmoid for a few pointers. It'll be helluva lot faster to learn and DIY than to rely on me to do it, especially since I have a lot on my plate already.
You can still use the sprites I've created for Cali Bear, and alter them in any way you wish.
Sorry 'bout this, but I think this is for the best for both of us.
Good luck, if you continue it. :)