I will be discussing the the main points of good and evil. In dragonball Z the use of heaven and hell is an occurence which is frequently happening. The bad guys in this show are sent to hell.

Goku, gohan, vegeta are  playing the role of the  good guy
while other characters such as " Cell, Buu, Freeza play the role of the evil
Just like most shows you have the usual bad guys vs. the good guys. Everyone how it's going to end up but sometimes it's extremely suspenseful. Dragonball Z has  done an excellent job on creating a suspense factor for the viewers to keep begging for more. In DBZ they have the evil side, which is trying to take over the world and demolish everyone in their paths. The good people are obviously there to prevent this from happening, they will do anything to keep the bad guys from taking over the world. In this world of DBZ they have the same outcome as we do when it comes to life and death, heaven and hell. If you are a good person you will go off to heaven, if you have done good deeds. For the evil characters it's not as fortunate, they are sent off to hell to face a lifetime of punishment. If you are a good person and have done deserved a second chance you have an oppurtunity where you can be wished back to earth by the usage of the Seven Dragon Balls. Goku, Gohan, Vegeta and the other many other characters have represented goodness and peace by preventing bad things happening to the earth. With this said it's noticeable that they have an interest what is not only best for themselves but for the people around them.
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