Both.
You need to get to the Hidden Land,go through it, get to Temporal Tower and go through it, and finally the last thing you need to do is defeat Primal Dialga. PS:Go to Temoral Tower ,after you defeat Primal Dialga, and defeat Dialga again and you can recruit him on your exploration team. (It looks so cool having Dialga follow you around!)
Dialga is not in that Pokemon Emerald. Back when that game was made, Dialga didn't exist.
You can't get Dialga in the start of the game! You can recruit Dialga after the 20 capters in the 2nd story.
Dialga, Palkia, Arceus, and giratinaare not in this game
It depends on which game. you can catch dialga on pearl with a code
Palkia appears in both time and darkness versions of the game. Dialga is the end of the first section of the game while Palkia shows up later in the post-game part. He's found quite far into the game and must be fought a 2nd time to be recruited (100% rate). Hope this helps!
With luck and with the right game you can get rare colored or shiny dialga
you can find dialga at the top of mount . cornet at spear piller in the diamond game.
Dialga is basicly in the game genderless but in the movies, he's male/boy.
No, Sapphire is a 3rd gen game. Dialga and Palkia were introduced in the 4th gen games.
he is NOT in the game
Exploration - video game - was created in 1994.