Who is Evo exactly? Many people in Tanyopa are in debt for the mysterious demon slayer. In fact, he's in the top most skillful slayers of Mobius! However, his true identity is kept hidden.

Evo is a combination of a bakeneko (but only one tail) and a devil in his blood heritage. His father was one of the royal guards at the foot of Lucifer's throne. He is, however, as powerful as Saint Gabriel. Evo only appears in the dark, for he prefers to assassinate a few of his prey before going through the rest of the group. His sword, Zalthuzir, belonged to his father while his pentagram styled devil amulet belonged to his mother.

Not much would know that Evo was a shy kid from a huge university. As Nick, he appears to be an introvert, really timid, weak, kind and depressed. But as Evo, he's cold, always serious and calm, conservative, swift and merciless to his attackers.

Secret: He is partially sadistic and enjoys dominating if he ever gets a partner.