You guys might like this. Here's an old article that goes into the motion capture for the first game's movies:

Onimusha Warlords

Mike is right about Capcom using XSI. You can read the Press Release.

Anyways, it's nice to see them bringing back Samonusuke....this time he travels through time with a French guy (who is actually played by the French guy that was in the movie Godzilla....the one one with Matthew Broderick. The French guy was the one who kept complaining about American coffee and wanted the news video tape....the oni model looks like him