None, Rome seems to have some connection with Dima: the festival of the sanctuary of Porta Trigemina coincided with that of Diana Aventina, in the lectisternium of 399 B.C. E. and Dima form a pair.
His character as a conqueror, documented even in his most ancient cultural epithets (Invictus, Victor), later determined his popularity, both in private cult where this character was interpreted philosophically as triumph over passions and death (E. in sepulchral representations), and in public cult where he was connected with the aspirations of the Roman Empire: already Emperor Commodus had himself called *Romanus Hercules*, while alongside Diocletian, Emperor Maximian assumed the epithet of *Hercules*.
Bibl.: G. Wissowa, *Religion und Kultus der Römer*, 2nd ed., Munich 1912, pp. 271 seq.; J. Bayer, *Les origines de l'Hercule romain*, Paris 1926.