When you have collected ALL 5 Gold Stars return and fight Crimson Dragon. When you have defeated him watch the credits and cutscences and you will recieve a Red Joker Wallpaper that you can set as a background for your Hunter VG.

When you have completed the corresponding task these stars will appear at the 'Title' screen. When you have collected ALL 5 you will be able to challenge Crimson Dragon SP.

Unlock Red Joker Star:
Beat the game for the first time

Unlock G Comp Star:
Collect ALL the Giga cards

Unlock M Comp Star:
Collect ALL the Mega cards

Unlock S Comp Star:
Collect ALL the Standard cards

Unlock SS Star:
Beat Sirius

In Echo Ridge go to Big Wave and talk to the Surfer Wizard in orange. When asks for a Cipher code you will receive the corresponding reward if you enter it correctly.

Eta67300 - Acid Ace V3

Upsilon79755 - AcornBomb3

Sigma08312 - AirShoes/260

Delta86531 - AirSpread3

Phi40588 - AntiDmg/250

Lamda09373 - BigDrop3

Omega68805 - BN Blaster EX (1/5/2)

Omicron74574 - BubblHook3

Mu13420 - Bushido3

Beta20976 - ClubStrngV3

Theta78108 - CygnsWingV3

Theta32596 - D.Engry

Psi09659 - Danger Ring (2/2/3)

Omega42348 - DblEater

Alpha40352 - DiamndIceV3

Delta75148 - DivideLine

Zeta11702 - DreadJokrV3

Chi83559 - DrillArm3

Kappa34080 - DrkPhntmV3

Sigma66019 - FlashStrk3

Chi78584 - Gale Claw (2/1/2)

Epsilon07292 - HP+50/110

Pi95941 - IceSpin3

Beta86425 - Invisible

Epsilon71083 - JackCorvsV3

Zeta78695 - KiloBomb1

Nu31121 - MechFlame3

Tau90338 - MegCls+1/270

Mu66767 - MoonDstryV3

Phi24914 - MuTech3

Gamma31412 - QueenVrgoV3

Tau78431 - Shuriken3

Nu73618 - SiriusV3

Alpha53637 - SmEngry

Alpha85072 - SmEngry

Delta51999 - SmEngry

Gamma19606 - SmEngry

Psi07280 - SpadMgnes V3

Theta71782 - SrchEye

Omicron64221 - StrngSwng V3

Rho17385 - ThndrHead3

Iota20404 - Unlocker

Eta28274 - Virus Claw (1/2/3)

Pi62739 - WickdFlame

Iota16196 - WolfWoodsV3

Hold L at the 'Title' screen and press the Gold stars in the following order; G Comp Star, M Comp Star, M Comp Star, SS Star, G Comp Star, S Comp Star, Red Joker Star. If you have entered the code correctly he will appear in the Meteor G Ctrl CC, which is located in the Orbital Base.

When you defeat the indicated enemy the corresponding star will appear at the 'Title' screen.

Unlock Mu Star:
Defeat Burai ZZ

Unlock AJ Star:
Defeat Acid Ace BB or Grave Joker RR

Unlock Sigma Star:
Defeat Sirius Sigma, Apollon Flame Sigma and Moon Disaster Sigma

Hold L at the 'Title' screen and press the Gold stars in the following order; S Comp Star, G Comp Star, S Comp Star, M Comp Star, SS Star, SS Star, and Red Joker Star. If you have entered the code correctly you will hear a confirmation sound.