Ok dudes . . . . the big secret is . . . you can play as Hercule. This game is loaded with tons of extra game play, and im just telling what I know right here.
Ok first of all you need to have "all" of the characters. (They are recieved in this order) Gohan, Piccolo, Vegeta, Trunks, and Goku. Now you should get them all to level fifty. Go through and you should know that each character except Goku has a level 50 door. Inside each one is a statue of that character. Gohans is north of West City, I believe in Ginger Town somewhere. Vegetas is in the Northern Mountains, west of the gate to Dr. Geros lab. Trunks' is in The Triceratops Jungle, North east i believe. And Piccolos . . . is on Namek. To get on Namek however, you will have to find all 7 missing Nameks. I will list where they are later (I'm aiming for Friday afternoon) in the walkthrough section. When you get all 7 you can travel back at free will to Namek using Vegeta space capsule. Travel their and there is a namek on your right who gives you the key to Grandpa Gohan's house which contains 3
+5, Power, Endurance, and Strength capsules. (1 of each) now head up north seeing as you can't go in the houses and the nameks all talk abhout the same things in random order. Break the bolder (you don't need a level for this) and go fight Cooler. (You should have met him earlier in the game after beeting the Triceratops King and flying back.) You can fight with anyone despite the fact that Cooler wants Goku. After you beat him you a door opens with . . . yet another door inside which is Piccolos level 50 barrier. Break it, grab the trophy and now head to the cell games. You will have to win thus, Gokue gives his life which gives him his trophy. After this is over, don't go to the lookout because that will just end the game.
Instead, head over to Capsule Corp and get HERCULE!!!!!! Get him to Level Fifty and gain access to the ZZTV room where you . . . . (ok ill tell you it sucks but its good for kicks.) Also see some DIFFERENT reactions. (Some people will act the same: normal humans that say things like "Nice day today!" and "Have you been following me around!" Hercule has one "energy" attack and it freezes enemies for a good amount of time. But beware. if an enemy doesn't see you, they will be alerated of your presence as soon as that attack wheres off because it uses the whole screen!