Mega Man of Star Force 2 (all three versions): 2 Secret bros. 2 Secret chips!

Out of my own experience by using the DS download station I was able to find four secrets not found in the game:

1. Bro. 1, Name 1stMega Man: You can brother force with the original Mega Man!

2. Bro. 2, Name Legend Master Shin: You can brother force with Legendary Master Shin!

3. Card 1, Name Ra Mu: You can gain the power of the final boss, Ra Mu in a card form!

4. Card 2, Name King Grandeur: You gain the power of Tribe King in a card form!

Check your local Gamestop or your favorite game store for a DS download service system.