Well, very easy. You can earn more and more Z points by playing in different mode in DBZ Budokai Tenkaichi 3 or you can unlock Z items by playing some missions in Ultamate Battle and Dragon History.
DBZ Budoki Tenkaichi 3
no.
you cant.
yes its available
Yes he is in 2
files tube
No.
You cant she is only on Dragonballlz budokai tenkaichi series. And It is easy to get tenkaichi 3. -Sromega Jenron
This winter
Go to evolution z
you have to beat the game
Level 1000