Welcome to the True Bean's World
Arioch was in the Raidou games, V had zero Kaneko demons that had no previous 3D appearances outside of Dx2 and NINE.
That's why the new demons here are a particularly huge deal. I want to see the front of Shemyaza and Gu Huo Niao!
Oh wow, I didn't know he was in those Raidou games! For some reason I thought his only recent appearance was in the Devil Survivor series. That really makes it more exciting! We'll be seeing some demons that have been away for a long time.