just finished a 3D blue version of fygar ( the dragon), plus a huge shot of flame.
I'll try to take pix later.
and yea, with this pixel style, anything should be possible (at least as far as old video games are concered). As you get into the newer systems, the sprites have more pixels, so they will obviously get bigger and more complicated. Simon Belmont, the vic viper, arthur from ghosts n goblins...should all work.