yes i think so a grudge battle is somthin you need certain requirments for!
Grudge matches are matches where you need certain requirements like the 2nd time you face Eddie (defeat all other grudge matches)
To fight him win 7 golden trophies in arcade mode.
defeat all ten trophie matches in the robo arcade with the chick robo (it is the most hardest grudge match EVER)
beat 10 grudge battles and go to your clubhouse
ToSimple,beat ten grudge matches and go to the numero uno clubhouse.
No there is not a code, but if u beat twelve grudge matchs... well just do that and go to numro unos clubhouse and u will see( i am spoiling the suprise)
complete 12 Grudge matches and talk to some guy and he will open up the entrance to the underground for you to buy illegal parts
Grudge matches are matches where you need certain requiements like to fight the parrot you need to win 7 gold trophies in the robo arcade
Custom Robo Arena happened in 2006.
look for your robo if you have all the movies then find it and it will help you.
You have to get all her ingredients by going back and forth to places it is annoying
Custom Robo Arena was created on 2006-10-19.