Custom Robo Arena Cheats - Nintendo DS

cheat description		size
SAVEGAME FOR US VERSION Oct. 13, 2012		256KB
ACTION REPLAY CODES May. 22, 2007		1KB

First Exam Answers
Use the following answers to pass the first exam:

Question 01: C
Question 02: B
Question 03: C
Question 04: A
Question 05: C
Question 06: B
Question 07: A
Question 08: B
Question 09: A
Question 10: C
Question 11: C
Question 12: B
Question 13: A
Question 14: A
Question 15: B
Question 16: B
Question 17: A
Question 18: C
Question 19: B
Question 20: B

Unlock the Underground
Once you beat around a dozen different grudge matches (the exact number varies), go in front of the clubhouse and fight your shadow self. Defeating him will net you some illegal parts and the dark commander mark. Talk to the suspicious man in the bottom left house in the bayside area to open the secret passage to the underground.

Unlock 2 New Dioramas
You can get 2 secret dioramas by talking to Lambda Halburn at Neobrain once you level up to King Rank. (Note: You can only do this during the Grudge Battles)

King's Throne Diorama - Get to King Rank, then talk to Lambda Halburn at Neobrain.
Victory Diorama - Get to King Rank, then talk to Lambda Halburn at Neobrain.

Unlock Reacquire the Ray MkII
To reacquire the Ray MkII after losing it, defeat the Robo Cup and then go speak to your character's father at Neobrain, Inc. Upon talking to him, he will hand back the Ray MkII.

Unlock Doppelganger Goods
After successfully completing twelve grudge matches, a doppelganger of your character will appear in front of your team's clubhouse, looking almost exactly like your main character. You'll be forced to fight him. Defeat him to accomplish the following.

Defeating him the first time will net you the Majel Robo, the Indigo Gun, Indigo Bomb, Indigo Pod, and Indigo Legs, as well as a pass that will allow you to access the underground. After defeating the Greybaum enemies with the boss data, you can again fight the doppelganger. This time, he will give you the Ray II Dark Robo, Ripple Laser Gun, Deva Bomb, Cerberus Pod, and Phantom Legs.

The Illegal Parts Shop
In order to gain access to these parts, you have to have received the Majel Set, the Dark Commander Mark, and you must have beaten your doppelganger in battle. Once that's all done, you'll be able to access the Underground to purchase your illegal parts. To get to the proper area of the Underground, head forward from the entrance and enter the door. Now, head to the right and go straight again. You'll come across the illegal parts shop. Costs are as follows:

Holoseums - $200
Bombs - $200
Guns - $300
Legs - $200
Pods - $200
Robos - $500

Unlock Special Robos (US)
AIRS - After beat all the characters at the grudge match, go talk to Stark then beat him.
Carat - Beat all limited robo missions, then beat Angelica.
Chick - Go to your clubhouse and talk to the left box upstair. Beat the boy hiding inside the box, but you must having a Max Combo of over 380 damage.
Hadron - Beat all the underground greybums bosses, and you will recieve Hadron data and his parts.
Illegal robos - Go to the underground the go to the middle door talk to the clerk selling parts.
Majel - After beat 12 characters in the grudge match, go in front of the clubhouse and fight your shadow.
Mistral - On the final grudge match, go to your clubhouse then beat Eddy.
Ray - After beat Eddy, Liv will came to your clubhouse, then you must beat her.
Ray 01 - Go to the underground the go to the middle door talk to the clerk selling parts.
Ray II Dark - Beat your evil shadow in the underground.
Ray MK II - Go to NeoBrain ,then go to your father lab and talk to him.
Ray Sky - Go to the underground the go to the middle door talk to the clerk selling parts.
X-Ray - Go to the Police station, and talk to the person near Kris on the left sitting on the table and he will ask you to purchase it.