Palkia

Palkia is a boss character in the post game of Pokemon Mystery Dungeon Explorers of Time, Darkness and Sky.

Overview
Palkia is a boss in PMD2, and was tricked by Darkrai to believe your partner and yourself is ruining the fabric of space. So whilst you and your partner were sleeping, he attacks you and sends you to Spacial Rift, a dungeon. At the end Palkia will start an onslaught against you.

Abilities
Palkia is a few levels higher than Dialga and has the IQ type J being exclusive to only Palkia, His known moveset is: Spacial Rend, Dragon Claw, Ancient Power. He is really dangerous. IQ type J means he can gain the ability to walk straight through walls, he is a powerfull ally once you recruit him.

Note
After you beat Darkrai, you can go to Spacial Rift and recruit Palkia if you want to