Budokai 2 bonuses:
Start a new game with a Dragon Ball Z: Budokai 2 save file on your memory card to get a Bardock capsule, a Bibidi's pot capsule, and a silver membersip card capsule.
Unlock All Characters and Capsules:
Go to the Main Menu to buy capsules. Click on the capsule that says "Gamble". If you buy a capsule from gamble you will see that your percentage will increase by five. Keep on repeating this process until you are satisfied!
Z mode:
Beat Dragon Universe on very hard.
Z2 mode:
Beat Dragon Universe on Z mode.
Z3 mode:
Beat Dragon Universe on Z2 mode.
Gold card:
Spend 100,000 zenie in the shop, or level a character up to 30.
Black card:
Spend 250,000 zenie in shop, or level a character up to 15.
Android 16:
Look for him on the South Island plain and then take him to Bulma in West City.
Android 17:
Use Piccolo and defeat Android 17 in the Dragon Universe.
Android 18:
Use Krillin to beat Dragon Universe mode.
Captain Ginyu:
In Dragon Universe, beat Captain Ginyu with Goku.
Cell:
In Dragon Universe, beat Cell with Teen Gohan.
Teen Gohan:
Beat Dragon Universe with Kid Gohan.
Dabura:
Beat Dabura in story mode with Teen Gohan.
Dr. Gero:
Beat Dr. Gero in Dragon Universe with Yamcha.
Cell Jr:
Beat Piccolo in Dragon Arena when he breaks in.
Saibaman:
Beat Nappa when he breaks in the Dragon Arena.
Frieza:
Beat Frieza in Dragon Univese with Goku.
Gohan:
Use Teen Gohan and beat Dragon Universe.
Goten:
Beat Goten in Dragon Universe with Gohan.
Great Saiyaman:
Beat Cell in story mode with Kid Gohan.
Hercule
Go to the desert in Picollo's DU. Help him then go to Central City and talk to Videl.
Kid Buu:
Beat Kid Buu in Dragon Universe with Goku.
Kid Goku:
Beat Dragon Universe with Broly OR Visit Grandpa Gohan's house before fighting Vegeta.
Vegeta:
Beat Vegeta in Dragon Universe with Goku.
Bardock:
Start Dragon Universe with Goku. Before you go to defeat Raditz, look to his ship. You will find Bardock`s capsule there.
Kid Trunks:
Beat Majin Buu in Dragon Universe with Vegeta.
Majin Buu:
Beat Majin Buu in Dragon Universe with Goku.
Omega Shenron:
When you are asked to fight Gotenks in the tournament, visit Bulma (West City) first, then defeat Gotenks.
Recoome:
Beat Recoome in Dragon Universe with Goku.
Super Buu:
Beat Super Buu in Dragon Universe with Goku.
Trunks:
Beat Dragon Universe with Vegeta.