Also another gem, I've found off of the Internet Archive. The description goes as follows:
"The biggest pack I've uploaded yet, with over 3000 characters included. It might not be well-made, but it's insane. Just about any character you can think of from 2004-2009 is included in here."

Considering how I remember this being on my channel at one point makes me feel happy to see it archived somewhere, considering the one on my channel from many years ago has a dead link. I'll still provide the preview below:
Either way, I've made 2 remakes of this roster before, I don't mind making another, completing this on,e considering
thankfully we are in a time people still make characters for winmugen

Preview: