 In the Japanese version of the third segment of the movie, Willis (or  Wallace) has nothing to do with the creation of Diaboromon, Yolie didnt have  uncles that helped her and the others go to Colorado, and there was a subplot  that Endigomon (Diaboromon) kidnapped the original digidestined and made them  younger in order to find Willis. Also, Willis never appeared in the second  segment, that was added in the US release only.