TOKYO -- As a young teenager in South Korea, Hong Sebin became fascinated with Japanese online cartoons about giant robots battling in the distant future.

A Gundam model on display at Bandai Spirits headquarters in Tokyo: Although the company's character franchises range from Tamagotchi to One Piece, Gundam is its most prized property, in large part because the company essentially has rights to the giant robots essentially to itself. (Photo by Ken Kobayashi)
Control empowers Japanese toymaker's experimentation with movies and trading cards