Lupin the 3rd: Green vs Red

If Lupin is stealing something in one place, how can he be shoplifting in another place entirely? One Lupin wears red; the other wears green. In the final standoff, whose side will Jigen, Goemon and Fujiko choose? After all, as the world's number one thief, there can't be two of him! (Source: TMS Entertainment USA)