Bardock
In goku`s DU mode before you fight radditz there will be a sayan space ship enter and you should get him
Teen Gohan
Beat dragon universe mode with Kid Gohan
Adult Gohan
Beat dragon universe mode with Teen Gohan
Great Saiyaman
Successfully complete DU mode as Adult Gohan
Radditz
Defeat Radditz in dragonuniverse mode with goku
Goten
Defeat Goten In Dragon Universe mode with Gohan
Kid goku
Before you fight nappa go to grandpa gohans house and goku will start talking then you will unlock kid goku
Hercule: In Piccolo's Dragon Universe, for at least the second time, you must talk to Hercule on the plains, in the Majin Saga. Then you must go to Videl in Central City and he will be unlocked.
Videl: In Adult Gohan's Dragon Universe talk to her at the Southern Islands, after beating Goten, and she will be unlocked.
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^Now THOSE, Are Vampires!, Unlike the crappy Twilight!,
Man, Don't mess with Anya o_0 EPIC BATTLE! Poor Stark, He just wants to sleep XDCurrent Obsession: [color=crimson]VAMPIRES!! XD.