Every villain in DBZ.
They are all the strongest in the universe.
Vageta
Picallo
Freiza
Buu
Cell
All of em were basically the strongest in the universe
the dragon ball z comes out and you find out that there is a god of destruction, WTF. He is stronger then ALL of the villains combined.. All they had to do was wake him up and he would stickout a finger and solo all of them....its ridiculous...