The Bishop of Tanagras Apostolos was born in 1965 in Eleftheroupoli of Kavala. He studied at the Theological School and at the Pedagogical Department of Primary Education of Aristotle University of Thessaloniki. He holds a post doctorate in the Pedagogical Department of Primary Education, Department of Special Pedagogy and Psychology of the National Kapodistrian University of Athens and PhD too. He also holds masters: 1) in Special Education at the Aristotle University of Thessaloniki, specializing in autism and mental retardation, 2) in the Design of Educational Units at the University of the Aegean, specializing in gender equality and 3) in Language and Literature at the Democritus University of Thrace, specializing in the Black Sea countries. He attended a course on Ecclesiastical Law in the Vatican with a scholarship from the Metropolitan of Philippi of Naples and Thassos, Mr. Prokopiou. Additionally, he specialized in autism at Harvard University in the USA and in the treatment of pain at New York University.

He participates with presentations in International Conferences and Meetings, while he publishes articles in international scientific journals, also in newspapers. In 2007 he was invited by the state of Texas to contribute to the electronic dissemination of knowledge about autism and in the summer of 2013, 2014, 2015, 2016, 2017 and 2018 he was invited by the University of Cambridge as a researcher in the International Autism Program. For 30 years, he has taken part in many humanitarian missions to third world countries, including in India near Mother Teresa (1984-1987). The Government of India gave him the title of "Citizen of Love". He pioneered the fight against child prostitution in Greece and abroad (1990-1994), the abolition of bombs in Yugoslavia (1993), as a member of Princess Diana's team. He volunteered for racial discrimination in Johannesburg (summer 1992 for two months). For his multifaceted humanitarian work he was honored with an award from the Academy of Athens in December 2007. In 2010 he was announced by the President of Special Olympics Hellas Mrs. Gianna Despotopoulou "Preacher of Volunteering" of Special Olympics in Greece. In 2011 and 2012 he was honored by the President of Special Olympics Dr. Shriver-Kennedy for the mobilization of Greek citizens in 2013 and 2014 by the President of SO HELLAS Gianna Despotopoulou. In March 2014 he was honored by the Mayor of Paggaio - Eleftheroupoli and the Mayor of Kavala Mr. K. Simitsis for his social, humanitarian, scientific and literary work.

In July 2014, the World Health Organization made a special mention to his study on breastfeeding, as the best in the world. On November 5, 2014, he was among the 50 personalities from all over the world who were received by the Pope at the Vatican and on November 8. The Vatican-based Giuseppe Scacca International Awards awarded him the 1st World Pedagogical Science Award for his research on autism, Down Syndrome and breastfeeding. On 16/1/2015 the President of the Hellenic Republic Mr. Karolos Papoulias awarded him the Golden Cross of the Order of Honor, which is the highest distinction of the Hellenic Republic.

Lately he is studying on the Nature and Limits of Church (post-doc for the Theology Department of the National and Kapodistrian University of Athens)

 He teaches at the Democritus University of Thrace and at the National and Kapodistrian University of Athens Autism, Family and Resilience”, Interdepartmental Postgraduate Studies Program of Special Education.