Coached by his father, Armenian National Coach, Edouard Demirchian, Gago started fencing in childhood. With the benefit of having his father as a coach, and a natural talent, Gago started winning many athletic titles at quite a young age. Gago became three times Armenian National Épée Champion, scored fourth in the USSR National Championship, and placed fourth at a World Cup in La Rochelle, France. In the USA, Gago became seven time champion at the California Games, and is a two time finalist in the NAC events. Gago earned his fencing master from the Institute of Physical Education and Sports in the USSR, and coached for almost 20 years. Currently his most talented student is Soren Thompson, a member of the US National Épée Team. Gago is a National Épée Coach. Head coach of the épée program at LAIFC, Gago runs the Épée Junior Program, a training program for young athletes, from which several participants actively fence in international events.