Georgios Papadopoulos
Georgios Papadopoulos (; ; 5 May 1919 – 27 June 1999) was the head of the military coup d'état that took place in Greece on 21 April 1967, and leader of the junta that ruled the country from 1967 to 1974. He held his dictatorial power until 1973, when he was himself overthrown by his co-conspirator Dimitrios Ioannidis.
Phaedon Gizikis
He was given the title of President of the Republic on 25 November 1973, after Papadopoulos was ousted by Dimitrios Ioannides as head of the regime in an internal power struggle. After the fall of the dictatorship in 1974, he retained his post for four months "pro tempore", until a new constitution could be enacted during metapolitefsi; he was then replaced by Michail Stasinopoulos.