he's probably Georgian or South Cacusus something or the other
I suspect that m'man might be a Russian national, but has roots in Georgia. Georgian criminals have a long history of having fun in Russia, dating back to Stalin (Dzejughashvili) and even earlier. Georgian and other Cacusus criminals are to Russian crime as Italian/Sicilian, Irish, and Jewish criminals are to American crime: the Gold Standard to which others are compared. Infamously Mark Twain noted that there was no distinctively American criminal class, except for Congress.