User blog comment:Jopjopjop/High School DxD BorN episode 3 review/@comment-6096197-20150419143458/@comment-3965848-20150420051431

Obviously they need to have Arthur in this series, why put someone in the theme if he won't appear at all, but I think he will come around the time Issei is in JD, which is when he and others saves Asia from the Dimensional Gap.