These are some of his allies. The first video is of the shinigami (death god) Silvy. She was designed by manga artist Kumichi Yoshizuki:
Her older brother is Lucius, who dislikes being a shinigami and the immortality that it comes with. Created by Eiichi Shimizu, Lucius wishes for death.
Marie was designed by Sunaho Tobe (Hexyz Force). She's a Dryad, devoid of emotion and uses nature-based spells.
Lastly, Shinichiro Otsuka (Summon Night) designed the golem prince, Hector.
UnchainBlades ReXX hits Japanese shelves on June 23rd.