I'd like to use that character myself. Sadly, Volt's website is no help and, the site you got that image from only has the add-ons and not the character required for them. Sometimes being interested in Japanese freebies can be extremely frustrating. Ah well, what can you do except try and stay on top of these things?

All we can do is hope Volt responds to Doggod's email or the one I sent off last night, though I'm guessing we didn't ask the same exact question.