User blog comment:IamJakuhoRaikoben/Chapter 330: Zirconis' Magic, Review./@comment-5268982-20130512160036/@comment-7418318-20130512162859

The bottle is from an OVA yes, but the other example is from the GMG arc. While that particular scene is anime only, Roubaul being a Ghost with a physical form is as official as you can get, with it being the case in both the Anime and Manga.