No.
You may not join Team Galactic in Pokemon Pearl or Diamond.
It is easy you enable walk through walls code and you go to galactic eternal building and talk to people.
No, you cannot join Team Galactic in any of the official Pokemon games.
You can't join
Go to the Pokemon spa there for 365 days in a row. On the 364 day Commander Saturn will be there and ask you to join team galactic!
You have to get the golden trainers card or if you have an action replay you can search up a cheat.
You can't
I don't think you can join team galactic and if you can, I'm giving you bad advice! I don't think you can join team galactic!
There's no such thing as "team team galactic". If you think you can join Team Galactic, you can't. The only Game where you play as a semi-bad guy is Colosseum.
I don't think you can.
no
you have to go to sunyshore city and go in the house that is next to the 1 that has a board and go in the house next to it and go in it and talk to the old people everyday and Cyrus will appear