Mugen Character Maker, was one of the 2nd mugen create all tools. (it superseded Mugen Edit Essemble)
Its useless currently. It can only make sff1's for old creations. the air file creation side was fairly useless and confusing. it made SND files well enough. it had no act file creation, it was never finished.
in the world of creation where everything is steping up to 1.0 standards, and 24bit (eventually), and SFF2, MCM can not compete