The last boss in Pokémon Mystery Dungeon: Explorer of Time is Dialga. After that boss you get the credits list and it says "The End". But it's possible to keep playing after that.
Darkrai
dark dialga is the last boss in the normal storyline, but in the post game however darkrai is the last boss.
it should be giritina
its marine resort
I thinkthe last boss you fight with is darkrai but im not very sure.
If u really want to know ill tell u wat i know i think the last boss is darkrai which is in deep dark crater
Sky Tower Summit: Rayquaza Lvl 35,Dragon Flying,600HP: Moves Twister,Dragon claw, Dragon Dance, Anctient power. Edit: tru but that is the story boss... the last boss i belive is mew. if you battle him, GOOD LUCK!
Fight Darkrai
Buy friend areas. The last dungeon is the deoxys one
It is called "In the Future of Darkness."
49f liar
That's the last event. After that, get all of the Pokemon to join your rescue team.