In 1930, he went to Athens and created the famous Mandra of Attik, a group of artists, singers and performers, directed by himself.
In 1944, a few months before the end of the Axis occupation of Greece, he appeared in the film of Giorgos Tzavellas Hirokrotimata (1944). A little later he committed suicide by taking an overdose of his sedative medicine.
- Giannis Kairophylas, I Athina kai i Athinaioi, 1834-1934, Volume 1, Filippotis ed., 1981, page 123: "ΚΛΕΩΝ ΤΡΙΑΝΤΑΦΥΛΛΟΥ (ΑΤΤΙΚ)."
- (in Greek) «O θείος μου, ο Αττίκ», αφήγηση της Πέλειας Τζαρτίλη, ανηψιάς του καλλιτέχνη, Περιοδικό «Κ»