Supreme Kai-
In Gohans DU, defeat Goten, then ignore your next point and go to
the same Plains where you unlock Videl, then go to your next point and fight videl. Then go to the northeast mountains, then go ahead to your next point and fight Dabura. At the same spot fight Majin look around Central City until you find Supreme Kai to get Supreme Kai.
Hope that helps!!
Peter (when he's hungover): This sucks worse than that time I went to that museum. (Flashback to childhood, standing in front of dinosaur skeletons.)
Peter (as a child): Why did all the dinosaurs die?
Man at Museum: Because you touch yourself at night.