If the secret characters are acquired, they will arrive with their own units:

Kaede is a secret character and can be played using a code.

Every mobile suit (except some secret characters) now a had a super move that can be used up to three times.

Also there is a secret character from the first series in this anime.

The home version also brings back Hayate as a secret character.

These players were available as secret characters in certain versions of the game.

Hotsuma appears as a secret character in the game.

Also a secret playable character, however he have no endings of his own.

Upon the completion of the game, a fourth "secret" character is made available.

After beating all 29 teams, the player faces off against a number of secret characters.