Bagarella was defo a scary guy. The most brutal Mafia in Italy has to be the'Ndrangheta they will wipe out entire families, women and children included. There have even been stories of Mafioso killing their own sisters in Calabria's own version of honour killings. The most brutal mobster for me though is Pino Greco, he took great pride in his work as the Corleonesi's top hitman.