His name is Koichi Sanders. He and the Colonel were divided at birth, despite not sharing a common mother nor being born in the same country or year. After that tragic separation, they never saw each other again, but for in the distant redness of Red land. They live in Red land, which is why the space behind them is always red. Their uniquely black and white faces cause them endless shame, as everywhere they go they are mistaken for each other. This is a big problem, since they do not even speak the same language!
Koichi Sanders considers the Colonel ‘the other’ Sanders, and vice versa.