Oh i see you stumbled upon Blue Moon's stuff. You know those were made for Knuckle Fighter not mugen right? Anyways, i guess in terms of things that people tried to make using his sprite i can tell you someone made his Tifa(i forget its name not very good anyways), Amin was a wip by someone but never finished, I'll see about Valkyrie and that Athena has 2 conversion both of which are pretty poor. Hopes this help.