Shaymin and Arceus are the only two Pokemon you cannot find or recruit. You can find every Pokemon from Bulbasaur to Darkrai, but not those two.
there is no shaymin (or arceus) in mystery dungeon 2. in Pokemon mystery dungeon explorers of the sky (check out serebii.net for that), there is shaymin and arceus, but i don't know if shaymin is recruitable.
I'm pretty sure no. But if you reach sky peak with shaymin 2 times shaymin will let you recruit it and you can get a gracadea flower somewhere in the village.
Arceus and Shaymin are the only two Pokemon of the series not to feature in Pokemon mystery Dungeon 2
after credits
You can recruit it at Palkia's dungeon ( after azurill's nightmare)
no srry
Unfortunately, shaymin and arceus don't appear in Pokemon mystery dungeon 2. It has every Pokemon from bulbasaur to darkrai, but not those 2.
If you're talking about Pokemon Mystery Dungeon Explorers of Time or Pokemon Mystery Dungeon Explorers of Darkness, you can recruit as many Pokemon as you want. If you are talking about Pokemon Mysatery Dungeon Blue Rescue Team or Pokemon Mystery Dungeon Red Rescue Team, you can only recruit a certain number of Pokemon per friend area.
in the second cave
at a certain part of the game chimeco will call you and tell you you can recruit yours truly Billy
Of course you can!
first you need to go back to Shaymin village and talk to the Shaymin closes the the dungeon entrence on the right.