Bruce Bogtrotter was a pretty iconic character. Sure, Matilda had all the magic, but Bruce had something we all really need: Will power. The character of Bruce Bogtrotter was played by Jim Karz, a young boy who impressed Danny DeVito in his audition and then went on to make history. TriStar PicturesThe iconic Bruce scene we all know and love was the one where he was forced to eat an entire cake. While it sounds good in theory, it's a ridiculously enormous cake and takes him hours to finish. But you know what, he powers through and that's what matters.