Kirill

Old childhood friend of Artemy, and by extension the rest of his gang.

Always wanted to become a doctor but his family never had the funds to support it. Instead whatever knowledge of medicine he has is what he has read from books and what Rubin and Isidor could have shown him. Still its hardly enough to call himself an actual doctor

He has always been frail and sickly since birth, this eventually led to him having to use a cane.

his sickly nature surely won't cause problems during an outbreak!

his lip scar is a by-product of being shoved to the ground by Grigori/Grief when they were kids. Those two Def have something going on