Zerobi no Anti

From DALpedia

The Zerobi no Anti (ゼロびのアンタイ, lit. Zero-Tailed Anti) is an astral demon that seeks out intense negative emotions in an overall good person and manifests itself inside that person as a parasite. It draws upon the negative emotion, and in return, provides the host with some of its monstrous energy. Sometimes, this energy is able to manipulate the host's personality, as was the case with Aura Hikari.

Anti's full name was given because of it's similarity to the Bijuu (lit. Tailed Demons) of Naruto, especially Kyuubi. The host has little to no control over the demon inside, but it's very powerful. If its powers are allowed to run out of hand, the host could be destroyed, as well as anything that would dare to face it.

Its true purpose is to simply destroy everything. Some legends cite it to be the most evil, powerful angel that God banished from Heaven. This would make it Satan. It doesn't deny this, yet at the same time doesn't confirm it. It prefers to go by its other name. It has recently teamed up with Drake Genais in order to fulfill its purpose. Drake knows that the Zerobi will most likely turn on him in the very end, but he doesn't seem to care.

In the Zerobi's original fully incarnated appearance in a short gaiden by Trent, it appeared as an inverted version of Tsu Nami. However, this appearance has been retconned. Its appearance is now that of an average-built humanoid made completely out of glowing dark purple energy.

During this gaiden, it was able to easily manhandle Zion Ultima and Xenai Omega, and may have done the same when Tsu Nami and Aura Hikari joined the fight, but Drake stopped the fight before it could get to that point.