Appearance

The flower clipped on his head is a peony. When he senses a Devora nearby, his ahoge sticks straight up. He is a little bit taller than Orion. He's an abnormal type Venia, so despite being a Moon-type he's pale-skinned. 

Personality

He's the eccentric researcher type who talks to himself, laughs like "ushishishi!", and has a collection of organs that are kept lovingly in glass jars. He is dedicated to the pursuit of knowledge and when he gets locked on a target, he won't give up until he's dissected and learned everything there is to know about them. 

Unlike Orion, he's more interested in studying Devora than killing them (dissection, research, etc). He's not the violent, stab-happy type. If anything, that sort of approach to Devoras annoys him because then his specimens get damaged and he can't get any info out of them. Nikola is very much the type who goes off into his own little world, but aside from those times he's quite calm and collected.