Antonis began practising martial arts at 11, training in Shotokan karate for a few months. A little later he took up jiu-jitsu and then pankration, the ancient Greek martial sport. He took a break to focus on his studies, which gave him the chance to reconsider what he wanted from martial arts. After exploring other disciplines, he found his fit in Krav Maga, which he now trains in intensively and teaches through Guerrilla.

He holds an Expert 1 black belt in Krav Maga and is a certified instructor, having completed the required specialist training courses. He also holds a blue belt in Brazilian Jiu-Jitsu (BJJ) and competes in Greece and abroad.

Antonis has attended numerous Krav Maga and practical shooting seminars. He completed Expert Camp in Israel, where Krav Maga originated. He has taken part in every Krav Maga Tournament, taking first place three times and second place once.

He continues to train regularly under Guerrilla head instructor Panagiotis Zacharios (Expert Level 3), whom he considers his mentor and with whom he works closely. He believes an instructor must always remain a student first.

At Guerrilla’s headquarters in Agios Dimitrios, Antonis leads the morning Krav Maga and GST classes and teaches the evening classes under Panagiotis Zacharios. At Guerrilla’s Ilioupoli school, he oversees the curriculum and teaches Krav Maga, Krav Maga Junior and GST.

Antonis is a co-founder and shareholder of a company in the public health sector. He studied in Athens and is a public health specialist. He has spoken at several seminars and one-day conferences, mainly organised by private-sector bodies. He holds a master’s degree specialising in environmental hygiene and occupational safety. His thesis examined Krav Maga, quality of life and workplace safety. He has a good command of English, including technical terminology.

In his spare time, he enjoys spearfishing, hunting, mountaineering, road and off-road cycling, and off-road driving.