User blog comment:IamJakuhoRaikoben/Chapter 468: Memory of the Stars, Review./@comment-5303512-20160113150826/@comment-85.193.154.170-20160113154805

Maybe their ability relates a Zodiac, but not all of them. Scorpio can use sand and Ajeel too, but Brandish uses mass manipulation, which isn't really related to a Zodiac's ability... So I think this theory is wrong, but that's interesting. Usually Hiro uses 7, July 7 X777, 7 DS etc, and 33, 33 babies etc.