7
Only black and white. Triple battles are battles in which three Pokemon are used by each trainer. There are many new strategies for 1 more Pokemon usable at a time!
You actually have to have 1,000 BP points. Sorry!
100 battles
This has been answered many times before. Anyway... Pokemon are different (e.g. main legendary), places are different (e.g. Black City / White Forest), and there are different battles.
There are ten Areas in pokemon colosseum. Each area has ten battles and in all there are 100 battles
A lot
52
450
you have to do 21 battles. by Matthew long
7
100
battles elp, but give the Pokemon pokeblock, poffin, etc. and a soothe bell if you have 1. hope this helped. srry i it didn't