Fantastic Four Cheats for GameCube

Unlockable Biographies
Unlock Bios 1 - Biographies of the Fantastic 4:
Purchase from 'Upgrades Menu' 2000pts
Unlock Bios 2 - Biographies of the classic Fantastic 4 Villains #1:
Purchase from 'Upgrades Menu' 2000pts
Unlock Bios 3 - Biographies of the classic Fantastic 4 Villains #2:
Purchase from 'Upgrades Menu' 2000pts
Unlock Bios 4 - Biographies of original 'Fantastic 4' Villains #1:
Purchase from 'Upgrades Menu' 2000pts
Unlock Bios 5 - Biographies of original 'Fantastic 4' Villains #2:
Purchase from 'Upgrades Menu' 2000pts

Unlockable Ultimates
Unlock Ultimates 1 - 'Ultimate Fantastic 4' Pannel #1:
Purchase from 'Upgrades Menu' 2500pts
Unlock Ultimates 2 - 'Ultimate Fantastic 4' Pannel #2:
Purchase from 'Upgrades Menu' 2500pts
Unlock Ultimates 3 - 'Ultimate Fantastic 4' Pannel #3:
Purchase from 'Upgrades Menu' 2500pts
Unlock Ultimates 4 - 'Ultimate Fantastic 4' Pannel #4:
Purchase from 'Upgrades Menu' 2500pts
Unlock Ultimates 5 - 'Ultimate Fantastic 4' Pannel #5:
Purchase from 'Upgrades Menu' 2500pts

Covers
Unlock Covers 1 - Classic 'Fantastic 4' Cover #1:
Purchase from 'Upgrades Menu' 2500pts
Unlock Covers 2 - Classic 'Fantastic 4' Cover #2:
Purchase from 'Upgrades Menu' 2500pts
Unlock Covers 3 - Classic 'Fantastic 4' Cover #3:
Purchase from 'Upgrades Menu' 2500pts
Unlock Covers 4 - Classic 'Fantastic 4' Cover #4:
Purchase from 'Upgrades Menu' 2500pts
Unlock Covers 5 - Classic 'Fantastic 4' Cover #5:
Purchase from 'Upgrades Menu' 2500pts
Unlock Covers 6 - Classic 'Fantastic 4' Cover #6:
Purchase from 'Upgrades Menu' 2500pts

Unlockable Interviews
Unlock Interviews 1 - Michael Chiklis (The Thing) Interview:
Purchase from 'Upgrades Menu' 5000pts
Unlock Interviews 2 - Loan Gruffudd (Mr. Fantastic) Interview:
Purchase from 'Upgrades Menu' 5000pts
Unlock Interviews 3 - Zak Penn & Marty Signore (writers) Interview #1:
Purchase from 'Upgrades Menu' 5000pts
Unlock Interviews 4 - Chris Evans (Human Torch) Interview:
Purchase from 'Upgrades Menu' 5000pts
Unlock Interviews 5 - Jessica Alba (Invisible Woman) Interview:
Purchase from 'Upgrades Menu' 5000pts
Unlock Interviews 6 - Zak Penn & Marty Signore (writers) Interview #2:
Purchase from 'Upgrades Menu' 5000pts
Unlock Interviews 7 - Julian McMahon (Dr. Doom) Interview:
Purchase from 'Upgrades Menu' 5000pts

Unlockable Secrets
Unlock Fantastic 4 Secret 1 - Stan Lee Interview #1:
Collect 9 Fantastic 4 Icons
Unlock Fantastic 4 Secret 2 - Stan Lee Interview #2:
Collect 13 Fantastic 4 Icons
Unlock Fantastic 4 Secret 3 - Developer Interview #1:
Collect 22 Fantastic 4 Icons
Unlock Fantastic 4 Secret 4 - Stan Lee Interview #3:
Collect 26 Fantastic 4 Icons
Unlock Fantastic 4 Secret 5 - Stan Lee Interview #4:
Collect 29 Fantastic 4 Icons
Unlock Fantastic 4 Secret 6 - Developer Interview #2:
Collect 33 Fantastic 4 Icons
Unlock Fantastic 4 Secret 7 - Stan Lee Interview #5
Collect 35 Fantastic 4 Icons

Unlock Bonus Level - Hell:
At the 'Main' menu enter Right, Right, B, X, Left, Up Down and if you have entered the code in correctly a sound will confirm

Unlockable Arena Fight Stages

Unlock Survival Killing Stage 2 - Barge:
Find 2 F4 Secrets

Unlock Survival Killing Stage 3 - Underground Arena:
Find 4 F4 Secrets

UnlockSurvival Killing Stage 4 - Tikal Arena:
Find 7 F4 Secrets

UnlockSurvival Killing Stage 5 - Horus Arena:
Find 20 F4 Secrets

UnlockSurvival Killing Stage 6 - Elevator Arena:
Find 25 F4 Secrets

UnlockSurvival Killing Stage 7 - SHIELD Arena:
Find 28 F4 Secrets
Unlock Guard Granny Level:
Find 31 F4 Secrets

There are only 2 F4 secrets that I don't have. I don't have them on Vault, Mission 4 (where you fight 'Dragonman' on the elevators) and Doom, Mission 6 (where you fight Dr. Doom for the first time with Sue, Johnny and Reed on the rooftop). On Doom 6, the F4 secret is behind where you start (you should see it spinning around behind you during the cutscene). I don't knoww how to get it because it is unreachable. If you jump for it, you miss it and die.

At the main menu, quickly press: Up, B, B, B, Left, Right, X. You should hear a sound confirming a valid code. What you need to do is to load your game and when it comes up with the stage selection, come back to the main menu. There should now be a 'Continue' at the bottom. Type in the cheat and then click on 'Continue'. You can then select any stage you have completed and/or the next stage with infinite Cosmic Power.