When I first tried mugen around 2008 or 9' I remember a website I believe it was called Mugenation or something, where I could navigate through the site to find characters, and I remember vage that a Juggernaut, John Talbein and Kamek were amongst the first that I downloaded.
I tend to play Mugen 1.1 usually, but over the last year I've been jumping a lot over to Ikemen Go. So, it's usually a mix between them both, depends on the mood. Ikemen Go is the best I think, but I hope it's evolution with qualities of life keeps improving, then there will be less reason to go back to normal mugen.
Re: Super Crazy Jam - The king of Fighters Multiverse