None they don't work on bosses.
The Time Space Orb is needed to find the three Regis.
You find it randomly on dungeons with a lot of floors
You can't you can only get him in explorers of sky and this is how you get it in sky once you beat dialga you go to spindas cafe and he will make an anouncement and he will tell you where girratina is hidden
no there is not a boss and here is something that might help you Pokemon explorers of time, darkness, and sky all do not have bosses.
you cant but you can in explorers of the sky by getting giratina's special orb
Yes.there are 29 floors Giratina on the 30th
dark dialga is the last boss in the normal storyline, but in the post game however darkrai is the last boss.
It's the Darkrai battle, as also seen in Pokemon Mystery Dungeon Explorers of Time/Darkness.
1 plus boss fight
No. You'll have to find some more codes specifically for explorers of sky. (Sorry I don't know any. I only have Time and Darkness.)
sky uses wonder mail "s"
i do not have explorers of sky