Palkia and Dialga don't evolve.
This is very true.
they don't evolve because put together they are the seconed strongest legendary Pokemon you have to get the marine resort to evolve
well you need to have a stubborn nature
I would recommend Pikachu and Piplup!
Yes, Electivire can be recruited in In Pokémon Mystery Dungeon but notably in In Pokémon Mystery Dungeon: Explorer of Darkness and Explorer of Time since it can be found in the Spacial Rift dungeon as well as in the Deep Spacial Rift area of the dungeon.
Sorry, there is no such code... :(
the boss has about 400, while when recruited he has 111
there isn't any. You have to enter one-by-one. not all at once.
Sky Stairway has 50 floor and a summit where Rayquaza can be battled and recruited.
ditto cant be recruited but I think he is in crystal cave
it's the same as the pokemon mystery dungeon red rescue team. you can find mewtwo in the western cave once you recruited ho-oh.
From Gamefaqs.com: Pichu can be recruited in Amp Plains, on the ninth and tenth floors.
In mystery dungeon Red/Blue, you can recruit it at Waterfall Pond, but first you need to obtain HM Waterfall from Solar Cave. Then, once you recruited it, at its friend area, choose become leader.
For Pokemon Blue mystery dungeon there is not a code to recruit all Pokemon monster in the game. There are several codes to help progress through the game such as spawning the Friend Bow.