The C-20 contender can be found at 1 TopList .
The categories in which C-20 can be found are :
Manga
Here is the list of TopList where you can vote for C-20:
Dragon Ball
Well, it's true that Majin Vegeta claims quite a few victims, so I could have put him there... But he's not really evil, it's just a little identity crisis... You've got to understand, he just wants to fight with Goku!