I updated some of Warner’s Mugen characters with English voices and some other small animation/sprite tweaks. I also gave Leela an AI – I was going to do the same for the others but didn’t have time, maybe in future. These versions have more sounds than the originals so the new .snd files aren’t compatible, you’ll need the full modified characters – available here:
These characters contain the original Spanish version by Warner as well as the English edit. Mugen should pick up the right version based on the language setting in your mugen.cfg file.