You have to complete the temple mission (where you go to the spot outside Cocona Village where Celebi takes you back in time). You complete the last mission in the thunder temple. It's one of the multiplayer missions, but you can play it by yourself. I recommend you use an Action Replay because they are designed for 2+ people, but you can do it easier with the cheats. You have to complete the other missions to unlock the other slates that you find in the game, all of them are the temple missions.
a infernape and you open it by clearing the first four temples in the past. after the last thunder temple touch it and you can enter
latias is in Pokemon ranger signs.
fall city is unt in Pokemon ranger guardian signs
Pokémon Ranger: Guardian Signs (Part One) and Pokémon Ranger: Guardian Signs (Part Two) or SS022 and SS023
do quests and catch legendary Pokemon to get signs
The newest Pokemon ranger game is Pokemon ranger: Guardian Signs.
no of course not
that Pokemon is not in Pokemon ranger, Pokemon ranger shadows of almia, or Pokemon ranger guardian signs
no t will not
probably not
no
Somewhere.