You have to complete the game, up until finishing the post-game storyline. This will reopen Spacial Rift, where you can encounter Palkia once more at the end. He will join automatically, when you defeat him.
There is many answers to your 1 question but ill give you a simple answer go to youtube and search Pokemon mystery dungen explorers of sky getting darkrai to join your team if this doen't work email me at superteen_13@yahoo.com
You just need to wait a while, eventualy you'll get a bad dream and then you will meet palkia soon after.
You can get a Vulpix to join your team then ebolve it. I'm sure there is a different was, but I don't know it yet.
It's not an event. Once you beat the game, graduate from Wigglytuff's Guild, and get past Regigigas and the other Regis, then one morning Palkia will come and take you to Spacial Rift. Go through it, beat Palkia, and then you will talk to Darkrai, and he will say to see him at Dark Crater. So go and beat Darkrai. And then go back to Spacial Rift, go through it again, and beat Palkia again. And he will want to join Team <name>
You get secret rank by rescuing scizor, and Pokemon in spinda cafe will give you secret missions. one will be Sky Stairway. Go to floor 50, defeat raquaza, get the Sky Melodica and it might join youHendejj
You can find Palkia in Spacial Rift. After you beat him, he'll ask to join your team. Say yes. You'll have Palkia on your team.
He won't but Palkia will.
you have to defeat darkrai and have cressilea,manaphy and palkia on your team
You should beat both stories and get Palkia, Diagla, and Cresselia on your team.
defeat him 2
to complete Explorers of Sky, you need to defeat Darkrai (with Cressilia on your team) in dark crater after defeating Palkia in the spacial rift.
After Azurill has the nightmare.
Palkia is level 48
Arceus is not in Explorers of Time or Explorers of Darkness. There is an Arceus statue in Explorers of Sky, but there is no real Arceus that will join your team.
Arceus is only in the game as a statue ( The statue is not Arceus )
you cant unless u cheat
go back to temporal tower after the credits and beat him and he will join i have him now he is lvl 48.