theres a certain code not sure what though
you cannot recruit Pokemon for completing missions in blue rescue but u can recruit via missions in time and dark
You can't recruit any Pokemon at the Makukita Dojo.
You can recruit Registeel in Pokemon Mystery Dungeon Blue Rescue Team but his recruit rate is 0.01 percent. Registeel can be found at the Buried Relic and his friend area is the Ancient Ruins.
I believe if you look at red rescue team it is the same.
no but you can, if you want to recruit it then i suggest you have something to make it easier to recruit Pokemon
There are hundreds of Pokemon that you can recruit in Pokemon rescue team. It would take hours to do everything. After you beat the game then you can recruit more Pokemon and buy more friend areas.
i am not sure about if they are the leader but they can be a partner
You get it when you recruit Ho-oh though I am not sure if you have to recruit it or just beat it
You may recruit Groudon after the end credits of the game.
All you have to do is defeat them and if you have their friend area they might join your team. (No promises!)
recruit articuno zapdos and moltres
after you recruit zapdos, articuno, and moltres.