User blog comment:B214/Question and Answers 6/@comment-24098614-20161123200843/@comment-10330822-20161124042317

Well the villain doesn't have to be the most powerful threat. Rizevim was dangerous in his own right, but it was his attempt to awaken Trihexa that made him such a threat. It's really no different than Shinobu Sensui from Yu Yu Hakusho. Sensui himself wasn't the most powerful person, but his threat to open a hole to the Demon World, which would bring about global destruction was much more serious.