While generally divided between the Italian, Sicilian and Russian mafias, the Gotham Families generally keep to their own territories and businesses within the city, very rarely resorting to anything beyond negotiation to settle public conflicts; although secret assassinations are also quite common. The Families also share business with groups such as the Triads, Yakuza and the Irish mob, who also operate within Gotham. At some points in the Gotham Underground's history, the entirety of the Families, mobs, groups and gangs were controlled by a single boss, known as Carmine "The Roman" Falcone.