Hello! I have noticed that most people don't get why Goku is little or as they call it "chibi". Well if you have seen the first episode of DBGT you would know, but if you haven't let me tell you. Goku was training Oob, or Mr. Buu, he had been training him for sixteen-years. When they stopped training Goku heard some sounds around Kame's island, he discovered that Pilof had gathered all of the Black Star Dragonballs and was going to make a wish, on accident Pilof wished Goku into a boy. Ever since then Pan, Goku, and Trunks are gathering up the Black Star Dragonballs so they can wish Goku into a man again.
Yes, another thing many of you noticed that the characters in DBGT are different than in DBZ. Well actually they aren't they are jsut as you could say " left out". Most of the characters are in it, but are seen or shown once and fro a very brief time. For instance one of my friends like Goten and was wondering were he is, he had asked if Goten had died but I said that he was just not in it. So for all those characters not in DBGT remember they exist in that time period, but aren't shown!!