Please note that I've never gotten far into the Anime or Manga, this is from what I learned from a friend of mine who loves the show, with my own touch. As such, this list may not be entirely accurate. Enjoy
Plus: Pluses are simply Human spirits, they exist on a mostly Astral plain, and so are considered to be the weakest of all Humanoid formations. Don't underestimate Pluses TOO much, they can still interact with the Human World, however this takes energy, and the more energy they use, the faster their Chain of Fate will disappear.
Basic Hollow: Immediately after the Chain of Fate has vanished, the Pluses' form will "explode" and reform elsewhere as the Hollow, Hollows are estimated to begin with 5X the physical strength they had as Humans…
Read more >