Dragon Ball Z: Budokai

[final kaoss]

Freiza, Ginyu, and Recoome
Play through "The Namek Saga" at any level to unlock Freiza, Ginyu, and Recoome.

[final kaoss]

Radditz, Vegeta, and Nappa
Play through "The Saiyan Saga" at any level to unlock Radditz, Vegeta, and Nappa.

[final kaoss]

Saiyaman Gohan's alter ego
Win a World Match Tournament at the "Advanced" level to unlock Saiyaman (Gohan's alter ego).

[final kaoss]

Android 16
Complete the "Aim For Perfect Form" episode to unlock Android #16.

[final kaoss]

Android 18
After you finish story mode, re-enter it. Go to the Android Saga and find the new episode Super Saiyan Vegeta. Enter this episode and you will end up fighting Android #18. Once you defeat her, you will get a new skill that states that you can now use Android #18 anytime.

[final kaoss]

Cell, Android 17, and Teen Gohan
Play through "The Androids Saga" at any level to unlock Cell, Android #17, and Teen Gohan.

[final kaoss]

Dodoria
Defeat Recoome with Vegeta.

[final kaoss]

Super Saiyan ability Goku only
Play through "The Namek Saga" at any level to unlock Super Saiyan ability (Goku only).

[final kaoss]

Super Saiyan ability Vegeta only
Play through "The Androids Saga" at any level to unlock Super Saiyan ability (Vegeta only).

[final kaoss]

Super Saiyan and Super Saiyan 2 abilities Teen Gohan only
Play through "The Androids Saga" at any level to unlock Super Saiyan and Super Saiyan 2 abilities (Teen Gohan only).

[final kaoss]

Alternate background
When you start the game and "Press Start" appears, remain idle and a FMV sequence will start. When the title screen appears, the background will be different. There are three or four different backgrounds. Besides the four backgrounds in the startup menu, and two different start up title songs, there is the normal background that has the actual Dragon Ball Z title screen from the show. There is also one that has to do with each main villain played against in the game.

[final kaoss]

Alternate level appearance
In the alternate Cell Ring, pieces of mountains will have holes blown through them, houses will be smoking in the background, and the ring itself will be cracked and almost destroyed. Also in the background, some buildings have holes in them and one even has part of a train track in it. Use the Spirit Bomb with Goku and you will find yourself in a crater fighting your opponent, with twisters in the background. Additionally, use one of the following moves with the indicated character to fight in a crater:

Spirit Bomb with Goku or Cell
Super Kamehameha with Teen Gohan
Big Bang Attack with Vegeta
Burning Attack with Trunks
Hellzone Grenade with Piccolo
Death Ball with Freiza

[final kaoss]

Story mode replay
Once you have completed story mode once, you will notice that there are some people missing, except for Gohan as a super hero and Hercule who get unlocked in world championship mode. Go back to story mode and you will see what you have done instead of starting a new story. Some of the episodes will have "New" beside them. Go into those episodes to get new players and new player abilities, such as a Super Saiyan for Vegeta.

[final kaoss]

Allow two player custom skill level on one memory card
At the character selection screen in duel mode, have player one choose a character first. Then, choose the custom skill setting. Then, take the memory card in slot one and move it to memory card slot two. Player two can now choose a custom skill setting without having two memory cards. If you do not like the random choice of three characters that Shenron powers-up, restart the GameCube. All your Dragon Balls will still be there when the game is resumed. Summon Shenron again until you like the choice of the three random characters.

[final kaoss]

The Dragon Balls
Within the game you can collect the seven Dragon Balls. In order to get them, you have to buy them at Mr. Popo's shop. However, they are very rare. They cost 8000 Zenie each and will only appear in a "Recommended" or "Gambled" Capsule. After collecting all seven, go to the Caps List option in the "Edit Skills" menu. Then go along to the second to last list. If all seven Dragon Balls are present, press A and you will be asked if you wish to summon Shenron. Select "Yes" and you will be given the option to "Breakthrough" three random characters. Breakthrough is a Capsule which will open all the Death Moves, Transformations, and Physical Moves of the character in possession. However, it takes up seven ability slots and cannot be equipped in conjunction with anything else. After choosing your character, the Dragon Balls will disappear and you will have to collect them all again. If you do not like the random choice of three characters that Shenron powers-up, restart the GameCube. All your Dragon Balls will still be there when the game is resumed. Summon Shenron again until you like the choice of the three random characters.

[final kaoss]

Alternate endings
After you complete the story mode you will be able to go back and do new missions in the three different sagas to unlock characters and items. After you do the new missions for each saga (can be done randomly), another mission opens where the story from the cartoon and game is changed. In the Saiyan Saga, you play as Vegeta and take on the Z Fighters. After Vegeta defeats each of them he turns Super Saiyan. In the Namek Saga, you play as Frieza and once again take on the Z Fighters. Once they are defeated Freeza, will use the Dragonballs and ask to be invincible. His wish is granted and he destroys Namek and then goes after Earth. In the Android Saga, you play as Cell. After absorbing Android 17, Cell goes after Android 18. He will try to absorb her but Krillin will jump in the way and be absorbed instead. Cell will become a hilarious fusion between the two. He will then take on Yamcha. After the fight, Tien goes to blast him but Cell suddenly wakes up from a dream. He is in his Perfect form waiting for the Cell Games. Additionally, these episodes can be unlocked when you complete Story Mode at any level:
Saiyan Saga episodes
2. A Mutually Deadly Foe: You fight Radditz with Piccolo instead of Goku. You will shoot out the Special Beam Cannon. To win, rotate one of the Analog-sticks clockwise. To do this easily, put the palm of your hand on both Analog-sticks and rotate them clockwise.
3 .Saiyan Attack: You fight Saibamen and Nappa with Piccolo.
7. Vegeta Saiyan Prince: You fight through Goku, Krillin, and Gohan with Vegeta and see what would happen if Vegeta defeated them all.
Namek Saga episodes 2. Vegeta's Attack: You fight Zarbon with Vegeta.
4. The Road to Super Saiyan: You fight Frieza with Vegeta.
5. Frieza or Vegeta?: You fight Frieza again, but this time Frieza is in his Final form.
9. Raging Frieza: You fight Gohan or probably Krillin with Frieza.
10. True Ruler: You fight the Z fighters and see what would happen if Freiza ruled them all.
Androids episodes
2. Super Saiyan Vegeta: You fight Andriod #19 with Vegeta.
5. Vegeta's Confidence: You fight Cell with Super Vegeta.
6. Perfect Form Cell Complete: You fight Cell at Perfect Form with Super Vegeta.
11.Aim for Perfect Form: You fight Android #16 with Cell.
12. A Cold-Blooded Assassin: You fight Yamcha with a funny looking Krillin/Cell thing.