Overman King Gainer

Overman King Gainer (OVERMANキングゲイナー, Ōbāman Kingu Geinā) is a Japanese anime series by Sunrise which ran from September 7, 2002 to March 22, 2003 on Japan's WOWOW network, and licensed by Sentai Filmworks.

Plot
Sometime in the distant future, mankind is forced to live in domed cities while the rest of the world is left to recover from years of environmental hardships. In the Siberian Dome-polis, professional gamer Gainer Sanga and mercenary Gain Bijou commandeer an Overman and lead a mass exodus out of the city.