User blog comment:Meruemgungiplayer/A Case Against the emitted Nen Beast./@comment-5780397-20190503163438

Right now I cannot get into it at length (and apologies if you addressed it in your reply on Reddit), but at the auction Tocino summons his 11 Black Children without the cloaks. Compare them as they appear in the top left panel here: https://mangabeast.com/manga/Hunter-X-Hunter/0073-014.png versus the man-size cloaks on the floor in chapter 68.