Here's another shot from the same episode of Oishi High School Battle. I believe I did this one after the shot of Noodles running, and probably used the same feet, and just altered them to fit Mucussance.
There's no shame in cheating, that's what Flash is really good for, when learning flash, How To Cheat in Flash was one of my favorite book series, the first one I bought was the edition for Flash CS3, there's been one for every version ever since, I still buy them just to keep supporting a fellow artist. There's a lot of neat tricks in those books, highly recommend them. Below is a link to buy the latest edition from Amazon.