Grigorios Papamichael studied Theology in the School of Halki. After teaching for some years in Sofia, he earned his PhD from the University of St. Petersburgh. From 1905 to 1907, he taught in the Theological School of Jerusalem. He became the chief editor of 'Ekklisiastikos Faros' and 'Pantainos' and in 1918, he was elected in the Chair of Apologetics in the University of Athens. He also taught in the Rizareios school, which he directed from 1937 to 1940.

Ioannis Charisiadis was an active contributor to Pantainos for three years. He graduated the Gymnasium in Ioannina in 1892 and was trained as a doctor in the University of Athens.

He was a Greek theologian, university professor and member of the Academy of Athens. He studied at Rizarios School (1900-1903) and the Theological School of Athens (1904-1908).