When the game starts, you have these Gundam Suits:

Gundam RX78-2

Gundam Mk-II

Gundam Z

Wing Gundam Zero

God Gundam

Turn-A Gundam

When the game starts, you have these pilots:

Domon Kasshu

Heero Yuy

Rolan Cehack

You can unlock more pilots by completing the following actions:

Amuro Ray - Complete Amuro Ray’s Offical Mode

Kamille Bidan - Complete Kamille Bidan’s Offical Mode

Judau Ashita - Complete Judau Ashita’s Offical Mode

Char Aznable - Complete Char Aznable’s Offical Mode

Paptimus Scirocco - Complete Paptimus Scirocco’s Offical Mode

Haman Karn - Complete Haman Karn’s Offical Mode

Master Asia - Complete Domon Kasshu’s Original Mode

Milliardo Peacecraft - Complete Heero Yuy’s Original Mode

Jerid Messa - Complete both Kamille Bidan’s and Heero Yuy’s Original Modes

Emma Sheen - Complete both Char Aznable’s and Rolan Cehack’s Original Modes

Elpe Ple - Complete both Judau Ashita’s and Domon Kasshu’s Original Modes

Ple Two - Complete Elpe Ple’s Original Mode

Roux Louka - Complete both Judau Ashita’s and Haman Karn’s Offical Modes

You must complete the story mode for the gundamn you want.