Dragon Ball Z Budokai 3

Have 16 or more characters available/unlocked, beat Novice level, then buy from capsule shop.

You can buy the Adept World Tournament; it consists of four rounds and sixteen people. For winning, you will receive 30,000 Zenie. You will get 15,000 Zenie for being the runner up.

You can buy the Advanced World Tournament; it consists of five rounds and a thirty two contestants. For winning, you will receive 50,000 Zenie. For being a runner up, you will get 25,000 Zenie.

When choosing a character at the selection screen press Left.

Select Goku in Dragon Universe and right when you begin fly to Grandpa Gohan's house.

Buy from Skill Shop when you got all Ultimate Move skills.

Buy it from skill shops when you got Baba Crystal Balls Movie 00.

At the start of Dragon Universe mode, fly over to Raditz's spaceship. You should see a "???". Enter it, and you should get him.

Alternately, keep checking the Sayian Space Pod, and at one point you will be able to go to it and find Bardock. This was found near the end of story mode when playing the first time.

If you go in to the capsule shop and don't like there capsules just go out and back in. Keep on doing it untill you are satisfied.

Buy it for 75,000 for each character at skill shops when you got Baba Crystal Balls Movie 01 and get all breakthrough each playable character in DU.