Quite new at this MUGEN thingy, but I thought I should share some of my first stages. No animations but they have original BG music by me.
So here we go:

From the left:
Lava oceanA desolate place far off on the outskirts of hell itself. Not many persons have been there and that's no wonder. Only the best has been brought there against their common sence to fight some of the most brutal enemies ever faced.
Dark desert fortressDuring the latter trips to Mars they established a base in the canyon district. The base got isolated a few years later during the big breakdown. Since then the base has been visited countless times by fighters who want to compete in the strange martian environment. The area around the base has been incapsuled in a dome holding breathable air and artificial gravity gives the place allmost feel like earth.
Download these stages here:
http://jobromedia.netcipia.net/xwiki/bin/view/MUGEN/stages