When you have reached a certain point near the beginning of the game the 'Card Input' Console will appear in the upper left corner of the cargo room (blue elevator in the ship). Enter the following codes to activate the corresponding effect.

Unlock Plasma Blaster - Most powerful gun in the game:
Enter the code 1432BDJ

Unlock Marine Wing; Cruiser Parts - Full Set:
Enter the code 1432FQJ

Unlock Shimainu; Child Spectrobe - Corona:
Enter the code 2341AJG

Unlock Dendama Spiko; Adult Spectrobe - Aurora:
Enter the code 4213LFP

Unlock Bakuraiya Wolve; Secret Spectrobe - Flash:
Enter the code 4213GBM

Unlock Defense Seed; Mineral - Raises a Spectrobe's Max Def:
Enter the code 1432CLS

Unlock Hp Seed; Mineral - Raises a Spectrobe's Max Hp:
Enter the code 4213AFJ

Unlock Extra Rooms; Lab System - 4 Extra Incubator Rooms:
Enter the code 3142MHG

Unlock Leozar Dragos; Evolved Spectrobe; Corona - Custom Part:
Enter the code 2341AIH

Unlock Azenor Cacti; Adult Spectrobe; Corona; Custom Color 2 - Custom Part:
Enter the code 1432IOB

Unlock Pinska; Dark Adult Spectrobe; Aurora - Must have reached a certain part of the game:
Enter the code 4213FMS

Unlock Evolve B; Mineral - Reduces number of battles needed for spectrobes to evolve to 0:
Enter the code 2341CFS

Unlock Tamzoa; Child Spectrobe; Flash - Custom Color 2:
Enter the code 3124KFN

Unlock Titanium/Metalium/Marble(5):
Enter the code 3124MOG