Q:Hey, ever wonder how the evil shenlong came to be?
A:In GT, The Z warriors find the 7 Dballs, but the are cracked. That makes the Evil Shenlong.
Q:Hey, ever wonder how Vegeta in the GT series gets to Super Vegeta 4?
A:Well, Bulma creates this machine called the brute ray and lets Vegeta train under it. So, when he was training under the machine Vegeta can't even turn SSJ-1 so he is really mad and turns into Super Vegeta 4.
Q:Who the heck is Mystic Gohan?
A:Well, in the Buu Series, Fat Buu beats up Gohan, so Kaioshin finds Gohan and brings him to his Planet. While on the Planet, the 15th Kaioshin appears and trains Gohan by reading. When he finishes, Gohan turns super powerful. Also, he wears Goku's suit when fighting Buu.