Neon, Main Street, Stargazer, Courtyard, Waterfall, Magma, Sunny Park, Sunset, and I think there's a Crystal Colosseum. There was one made only for DS battles, but I don't remember the name.
You need to beat all 10 Colosseums in the "Colosseum Battle" mode.
you get money when you beat trainers and colosseums
No because it can't battle in the orre colosseum however every other colosseum it can enter and even has a shadow pokemon.
just keep beating other ones
by beating the previous places. there are 8 Colosseums.
Don't need an event all you have to do is have Pokemon colosseum and Pokemon colosseums 6 Pokemon go through mt battle on colosseum battles its called mt battle vs 100 go through this without losing all your continues and HO-OH is your prize!
If you are talking about the Courtyard Colosseum battles, there's seven in total. If you mean how many Colosseums you have to beat in order to unlock Courtyard Colosseum, there's eight colosseums before it.
The Colosseums are... The Gateway Colosseum, the Main Street Colosseum, the Waterfall Colosseum, the Neon Colosseum, the Crystal Colosseum, the Sunny Park Colosseum, the Magma Colosseum, the Sunset Colosseum, the Courtyard Colosseum, and the Stargazer Colosseum.
For most of the colosseums, you have to beat 6 trainers, and then the 7th trainer you face will normally be that colosseum's leader
Yes
gladiators
the whole city